129472564 has 12 divisors (see below), whose sum is σ = 244006084. Its totient is φ = 59756544.

The previous prime is 129472477. The next prime is 129472571. The reversal of 129472564 is 465274921.

129472564 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 56370064 + 73102500 = 7508^2 + 8550^2 .

It is a congruent number.

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, 1244877 + ... + 1244980.

Almost surely, 2^129472564 is an apocalyptic number.

It is an amenable number.

129472564 is a deficient number, since it is larger than the sum of its proper divisors (114533520).

129472564 is a wasteful number, since it uses less digits than its factorization.

129472564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2489874 (or 2489872 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 129472564 is about 11378.6011442532. The cubic root of 129472564 is about 505.8936749001.

The spelling of 129472564 in words is "one hundred twenty-nine million, four hundred seventy-two thousand, five hundred sixty-four".