129725704 has 16 divisors (see below), whose sum is σ = 253811520. Its totient is φ = 62042640.

The previous prime is 129725693. The next prime is 129725707. The reversal of 129725704 is 407527921.

It is not an unprimeable number, because it can be changed into a prime (129725707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352332 + ... + 352699.

It is an arithmetic number, because the mean of its divisors is an integer number (15863220).

Almost surely, 2^129725704 is an apocalyptic number.

It is an amenable number.

129725704 is a deficient number, since it is larger than the sum of its proper divisors (124085816).

129725704 is a wasteful number, since it uses less digits than its factorization.

129725704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705060 (or 705056 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 129725704 is about 11389.7192239317. The cubic root of 129725704 is about 506.2231618349.

The spelling of 129725704 in words is "one hundred twenty-nine million, seven hundred twenty-five thousand, seven hundred four".