129424672 has 48 divisors (see below), whose sum is σ = 290562552. Its totient is φ = 56217600.

The previous prime is 129424661. The next prime is 129424679. The reversal of 129424672 is 276424921.

It can be written as a sum of positive squares in 4 ways, for example, as 65999376 + 63425296 = 8124^2 + 7964^2 .

It is not an unprimeable number, because it can be changed into a prime (129424679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2079 + ... + 16222.

Almost surely, 2^129424672 is an apocalyptic number.

It is an amenable number.

129424672 is an abundant number, since it is smaller than the sum of its proper divisors (161137880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129424672 is a wasteful number, since it uses less digits than its factorization.

129424672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18341 (or 18333 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 129424672 is about 11376.4964729920. The cubic root of 129424672 is about 505.8312903889.

The spelling of 129424672 in words is "one hundred twenty-nine million, four hundred twenty-four thousand, six hundred seventy-two".