129812552 has 32 divisors (see below), whose sum is σ = 256867200. Its totient is φ = 61378944.

The previous prime is 129812533. The next prime is 129812587. The reversal of 129812552 is 255218921.

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 7 ways as a sum of consecutive naturals, for example, 12413 + ... + 20339.

It is an arithmetic number, because the mean of its divisors is an integer number (8027100).

Almost surely, 2^129812552 is an apocalyptic number.

It is an amenable number.

129812552 is a deficient number, since it is larger than the sum of its proper divisors (127054648).

129812552 is a wasteful number, since it uses less digits than its factorization.

129812552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8045 (or 8041 counting only the distinct ones).

The product of its digits is 14400, while the sum is 35.

The square root of 129812552 is about 11393.5311471027. The cubic root of 129812552 is about 506.3361044012.

The spelling of 129812552 in words is "one hundred twenty-nine million, eight hundred twelve thousand, five hundred fifty-two".