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421202404 = 227172379487
BaseRepresentation
bin11001000110110…
…000100111100100
31002100120022002001
4121012300213210
51330311434104
6105443455044
713303106230
oct3106604744
91070508061
10421202404
111a6837667
12b9087484
13693560bc
143dd235c0
1526ea0aa4
hex191b09e4

421202404 has 96 divisors (see below), whose sum is σ = 944455680. Its totient is φ = 160123392.

The previous prime is 421202371. The next prime is 421202447. The reversal of 421202404 is 404202124.

It is a super-2 number, since 2×4212024042 = 354822930270758432, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 864649 + ... + 865135.

It is an arithmetic number, because the mean of its divisors is an integer number (9838080).

Almost surely, 2421202404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421202404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (472227840).

421202404 is an abundant number, since it is smaller than the sum of its proper divisors (523253276).

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

421202404 is a wasteful number, since it uses less digits than its factorization.

421202404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 421202404 is about 20523.2162196864. The cubic root of 421202404 is about 749.6012125883.

Adding to 421202404 its reverse (404202124), we get a palindrome (825404528).

The spelling of 421202404 in words is "four hundred twenty-one million, two hundred two thousand, four hundred four".

Divisors: 1 2 4 7 14 17 23 28 34 46 68 79 92 119 158 161 238 316 322 391 476 487 553 644 782 974 1106 1343 1564 1817 1948 2212 2686 2737 3409 3634 5372 5474 6818 7268 8279 9401 10948 11201 12719 13636 16558 18802 22402 25438 30889 33116 37604 38473 44804 50876 57953 61778 76946 78407 115906 123556 153892 156814 190417 216223 231812 269311 313628 380834 432446 538622 654041 761668 864892 884879 1077244 1308082 1332919 1769758 2616164 2665838 3539516 4578287 5331676 6194153 9156574 12388306 15042943 18313148 24776612 30085886 60171772 105300601 210601202 421202404