129529732 has 12 divisors (see below), whose sum is σ = 240011100. Its totient is φ = 60955136.

The previous prime is 129529727. The next prime is 129529759. The reversal of 129529732 is 237925921.

It can be written as a sum of positive squares in 2 ways, for example, as 81974916 + 47554816 = 9054^2 + 6896^2 .

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, 952357 + ... + 952492.

It is an arithmetic number, because the mean of its divisors is an integer number (20000925).

Almost surely, 2^129529732 is an apocalyptic number.

It is an amenable number.

129529732 is a deficient number, since it is larger than the sum of its proper divisors (110481368).

129529732 is a wasteful number, since it uses less digits than its factorization.

129529732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1904870 (or 1904868 counting only the distinct ones).

The product of its digits is 68040, while the sum is 40.

The square root of 129529732 is about 11381.1129508498. The cubic root of 129529732 is about 505.9681222660.

The spelling of 129529732 in words is "one hundred twenty-nine million, five hundred twenty-nine thousand, seven hundred thirty-two".