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142787302 = 2731210613
BaseRepresentation
bin10001000001011…
…00001011100110
3100221200100100121
420200230023212
5243023143202
622100232154
73352446340
oct1040541346
9327610317
10142787302
1173666239
123b99b65a
1323774c38
1414d6c290
15c807537
hex882c2e6

142787302 has 24 divisors (see below), whose sum is σ = 252952848. Its totient is φ = 59214960.

The previous prime is 142787279. The next prime is 142787311. The reversal of 142787302 is 203787241.

It is a super-2 number, since 2×1427873022 = 40776427224878408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8148 + ... + 18760.

It is an arithmetic number, because the mean of its divisors is an integer number (10539702).

Almost surely, 2142787302 is an apocalyptic number.

142787302 is a deficient number, since it is larger than the sum of its proper divisors (110165546).

142787302 is a wasteful number, since it uses less digits than its factorization.

142787302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10684 (or 10653 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 142787302 is about 11949.3640834983. The cubic root of 142787302 is about 522.6727550058.

The spelling of 142787302 in words is "one hundred forty-two million, seven hundred eighty-seven thousand, three hundred two".

Divisors: 1 2 7 14 31 62 217 434 961 1922 6727 10613 13454 21226 74291 148582 329003 658006 2303021 4606042 10199093 20398186 71393651 142787302