129375862 has 64 divisors (see below), whose sum is σ = 250449408. Its totient is φ = 49077600.

The previous prime is 129375839. The next prime is 129375881. The reversal of 129375862 is 268573921.

It is a super-2 number, since 2×129375862² = 33476227336486088, 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 (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 987537 + ... + 987667.

It is an arithmetic number, because the mean of its divisors is an integer number (3913272).

Almost surely, 2^129375862 is an apocalyptic number.

129375862 is a deficient number, since it is larger than the sum of its proper divisors (121073546).

129375862 is a wasteful number, since it uses less digits than its factorization.

129375862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 204 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 129375862 is about 11374.3510584121. The cubic root of 129375862 is about 505.7676942464.

The spelling of 129375862 in words is "one hundred twenty-nine million, three hundred seventy-five thousand, eight hundred sixty-two".