129923038 has 32 divisors (see below), whose sum is σ = 230148864. Its totient is φ = 53851392.

The previous prime is 129923023. The next prime is 129923047. The reversal of 129923038 is 830329921.

It is a junction number, because it is equal to n+sod(n) for n = 129922988 and 129923006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63406 + ... + 65422.

It is an arithmetic number, because the mean of its divisors is an integer number (7192152).

Almost surely, 2^129923038 is an apocalyptic number.

129923038 is a deficient number, since it is larger than the sum of its proper divisors (100225826).

129923038 is a wasteful number, since it uses less digits than its factorization.

129923038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 129923038 is about 11398.3787443654. The cubic root of 129923038 is about 506.4797145171.

The spelling of 129923038 in words is "one hundred twenty-nine million, nine hundred twenty-three thousand, thirty-eight".