129934572 has 12 divisors (see below), whose sum is σ = 303180696. Its totient is φ = 43311520.

The previous prime is 129934543. The next prime is 129934583. The reversal of 129934572 is 275439921.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5413929 + ... + 5413952.

It is an arithmetic number, because the mean of its divisors is an integer number (25265058).

Almost surely, 2^129934572 is an apocalyptic number.

129934572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129934572 is an abundant number, since it is smaller than the sum of its proper divisors (173246124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129934572 is a wasteful number, since it uses less digits than its factorization.

129934572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10827888 (or 10827886 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 129934572 is about 11398.8846822836. The cubic root of 129934572 is about 506.4947017595.

The spelling of 129934572 in words is "one hundred twenty-nine million, nine hundred thirty-four thousand, five hundred seventy-two".