129059752 has 8 divisors (see below), whose sum is σ = 241987050. Its totient is φ = 64529872.

The previous prime is 129059747. The next prime is 129059783. The reversal of 129059752 is 257950921.

It can be written as a sum of positive squares in only one way, i.e., 123076836 + 5982916 = 11094^2 + 2446^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8066227 + ... + 8066242.

Almost surely, 2^129059752 is an apocalyptic number.

It is an amenable number.

129059752 is a deficient number, since it is larger than the sum of its proper divisors (112927298).

129059752 is a wasteful number, since it uses less digits than its factorization.

129059752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16132475 (or 16132471 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 129059752 is about 11360.4468221985. The cubic root of 129059752 is about 505.3554364702.

The spelling of 129059752 in words is "one hundred twenty-nine million, fifty-nine thousand, seven hundred fifty-two".