129764922 has 16 divisors (see below), whose sum is σ = 296605632. Its totient is φ = 37075680.

The previous prime is 129764903. The next prime is 129764933. The reversal of 129764922 is 229467921.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 3089641 = 129764922 / (1 + 2 + 9 + 7 + 6 + 4 + 9 + 2 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1544779 + ... + 1544862.

It is an arithmetic number, because the mean of its divisors is an integer number (18537852).

Almost surely, 2^129764922 is an apocalyptic number.

129764922 is an abundant number, since it is smaller than the sum of its proper divisors (166840710).

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

129764922 is a wasteful number, since it uses less digits than its factorization.

129764922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3089653.

The product of its digits is 108864, while the sum is 42.

The square root of 129764922 is about 11391.4407341653. The cubic root of 129764922 is about 506.2741696127.

The spelling of 129764922 in words is "one hundred twenty-nine million, seven hundred sixty-four thousand, nine hundred twenty-two".