129842704 has 10 divisors (see below), whose sum is σ = 251570270. Its totient is φ = 64921344.

The previous prime is 129842693. The next prime is 129842707. The reversal of 129842704 is 407248921.

It can be written as a sum of positive squares in only one way, i.e., 124367104 + 5475600 = 11152^2 + 2340^2 .

It is not an unprimeable number, because it can be changed into a prime (129842707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4057569 + ... + 4057600.

It is an arithmetic number, because the mean of its divisors is an integer number (25157027).

Almost surely, 2^129842704 is an apocalyptic number.

It is an amenable number.

129842704 is a deficient number, since it is larger than the sum of its proper divisors (121727566).

129842704 is an equidigital number, since it uses as much as digits as its factorization.

129842704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8115177 (or 8115171 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 129842704 is about 11394.8542772604. The cubic root of 129842704 is about 506.3753041655.

The spelling of 129842704 in words is "one hundred twenty-nine million, eight hundred forty-two thousand, seven hundred four".