129529402 has 8 divisors (see below), whose sum is σ = 194347296. Its totient is φ = 64746972.

The previous prime is 129529397. The next prime is 129529453. The reversal of 129529402 is 204925921.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 4003 + ... + 16585.

It is an arithmetic number, because the mean of its divisors is an integer number (24293412).

Almost surely, 2^129529402 is an apocalyptic number.

129529402 is a deficient number, since it is larger than the sum of its proper divisors (64817894).

129529402 is a wasteful number, since it uses less digits than its factorization.

129529402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17732.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 129529402 is about 11381.0984531371. The cubic root of 129529402 is about 505.9676925844.

The spelling of 129529402 in words is "one hundred twenty-nine million, five hundred twenty-nine thousand, four hundred two".