129624128 has 14 divisors (see below), whose sum is σ = 257223006. Its totient is φ = 64812032.

The previous prime is 129624119. The next prime is 129624151. The reversal of 129624128 is 821426921.

It can be written as a sum of positive squares in only one way, i.e., 118548544 + 11075584 = 10888^2 + 3328^2 .

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 as a sum of consecutive naturals, namely, 1012625 + ... + 1012752.

Almost surely, 2^129624128 is an apocalyptic number.

It is an amenable number.

129624128 is a deficient number, since it is larger than the sum of its proper divisors (127598878).

129624128 is an equidigital number, since it uses as much as digits as its factorization.

129624128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025389 (or 2025379 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 129624128 is about 11385.2592416686. The cubic root of 129624128 is about 506.0910020832.

The spelling of 129624128 in words is "one hundred twenty-nine million, six hundred twenty-four thousand, one hundred twenty-eight".