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1403421642 = 232727173307
BaseRepresentation
bin101001110100110…
…1000001111001010
310121210210012120100
41103221220033022
510333233443032
6351132110230
746530613200
oct12351501712
93553705510
101403421642
116602164a7
12332005376
131949a900c
14d4563070
158331d97c
hex53a683ca

1403421642 has 144 divisors (see below), whose sum is σ = 3647996352. Its totient is φ = 388644480.

The previous prime is 1403421629. The next prime is 1403421683. The reversal of 1403421642 is 2461243041.

It is a happy number.

1403421642 is a `hidden beast` number, since 1 + 403 + 4 + 216 + 42 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4571253 + ... + 4571559.

It is an arithmetic number, because the mean of its divisors is an integer number (25333308).

Almost surely, 21403421642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1403421642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1823998176).

1403421642 is an abundant number, since it is smaller than the sum of its proper divisors (2244574710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1403421642 is a wasteful number, since it uses less digits than its factorization.

1403421642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 1403421642 is about 37462.2695788710. The cubic root of 1403421642 is about 1119.5995703946.

Adding to 1403421642 its reverse (2461243041), we get a palindrome (3864664683).

The spelling of 1403421642 in words is "one billion, four hundred three million, four hundred twenty-one thousand, six hundred forty-two".

Divisors: 1 2 3 6 7 9 14 18 21 42 49 63 71 73 98 126 142 146 147 213 219 294 307 426 438 441 497 511 614 639 657 882 921 994 1022 1278 1314 1491 1533 1842 2149 2763 2982 3066 3479 3577 4298 4473 4599 5183 5526 6447 6958 7154 8946 9198 10366 10437 10731 12894 15043 15549 19341 20874 21462 21797 22411 30086 31098 31311 32193 36281 38682 43594 44822 45129 46647 62622 64386 65391 67233 72562 90258 93294 108843 130782 134466 135387 152579 156877 196173 201699 217686 253967 270774 305158 313754 326529 392346 403398 457737 470631 507934 653058 761901 915474 941262 1068053 1098139 1373211 1411893 1523802 1591181 2136106 2196278 2285703 2746422 2823786 3182362 3204159 3294417 4571406 4773543 6408318 6588834 9547086 9612477 9883251 11138267 14320629 19224954 19766502 22276534 28641258 33414801 66829602 77967869 100244403 155935738 200488806 233903607 467807214 701710821 1403421642