129609052 has 24 divisors (see below), whose sum is σ = 232848000. Its totient is φ = 63091056.

The previous prime is 129609041. The next prime is 129609083. The reversal of 129609052 is 250906921.

It is a junction number, because it is equal to n+sod(n) for n = 129608999 and 129609017.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 60699 + ... + 62797.

It is an arithmetic number, because the mean of its divisors is an integer number (9702000).

Almost surely, 2^129609052 is an apocalyptic number.

It is an amenable number.

129609052 is a deficient number, since it is larger than the sum of its proper divisors (103238948).

129609052 is a wasteful number, since it uses less digits than its factorization.

129609052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505 (or 2503 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 129609052 is about 11384.5971382390. The cubic root of 129609052 is about 506.0713809322.

The spelling of 129609052 in words is "one hundred twenty-nine million, six hundred nine thousand, fifty-two".