129618572 has 12 divisors (see below), whose sum is σ = 228278400. Its totient is φ = 64396176.

The previous prime is 129618499. The next prime is 129618583. The reversal of 129618572 is 275816921.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102572 + ... + 103827.

It is an arithmetic number, because the mean of its divisors is an integer number (19023200).

Almost surely, 2^129618572 is an apocalyptic number.

It is an amenable number.

129618572 is a deficient number, since it is larger than the sum of its proper divisors (98659828).

129618572 is a wasteful number, since it uses less digits than its factorization.

129618572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206560 (or 206558 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 129618572 is about 11385.0152393398. The cubic root of 129618572 is about 506.0837712231.

The spelling of 129618572 in words is "one hundred twenty-nine million, six hundred eighteen thousand, five hundred seventy-two".