129064572 has 72 divisors (see below), whose sum is σ = 401544416. Its totient is φ = 34038144.

The previous prime is 129064571. The next prime is 129064583. The reversal of 129064572 is 275460921.

129064572 is a `hidden beast` number, since 1 + 2 + 9 + 0 + 645 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129064571) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 16423 + ... + 22974.

Almost surely, 2^129064572 is an apocalyptic number.

129064572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129064572 is an abundant number, since it is smaller than the sum of its proper divisors (272479844).

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

129064572 is a wasteful number, since it uses less digits than its factorization.

129064572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39427 (or 39422 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 129064572 is about 11360.6589597611. The cubic root of 129064572 is about 505.3617275688.

The spelling of 129064572 in words is "one hundred twenty-nine million, sixty-four thousand, five hundred seventy-two".