129522956 has 24 divisors (see below), whose sum is σ = 229614000. Its totient is φ = 63923904.

The previous prime is 129522919. The next prime is 129522971. The reversal of 129522956 is 659225921.

It is a super-2 number, since 2×129522956² = 33552392261955872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182330 + ... + 183038.

It is an arithmetic number, because the mean of its divisors is an integer number (9567250).

Almost surely, 2^129522956 is an apocalyptic number.

It is an amenable number.

129522956 is a deficient number, since it is larger than the sum of its proper divisors (100091044).

129522956 is a wasteful number, since it uses less digits than its factorization.

129522956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241 (or 1239 counting only the distinct ones).

The product of its digits is 97200, while the sum is 41.

The square root of 129522956 is about 11380.8152607799. The cubic root of 129522956 is about 505.9592993244.

The spelling of 129522956 in words is "one hundred twenty-nine million, five hundred twenty-two thousand, nine hundred fifty-six".