129133832 has 8 divisors (see below), whose sum is σ = 242125950. Its totient is φ = 64566912.

The previous prime is 129133813. The next prime is 129133903. The reversal of 129133832 is 238331921.

It can be written as a sum of positive squares in only one way, i.e., 88096996 + 41036836 = 9386^2 + 6406^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8070857 + ... + 8070872.

Almost surely, 2^129133832 is an apocalyptic number.

It is an amenable number.

129133832 is a deficient number, since it is larger than the sum of its proper divisors (112992118).

129133832 is a wasteful number, since it uses less digits than its factorization.

129133832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16141735 (or 16141731 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 129133832 is about 11363.7067895999. The cubic root of 129133832 is about 505.4521089277.

The spelling of 129133832 in words is "one hundred twenty-nine million, one hundred thirty-three thousand, eight hundred thirty-two".