129022170 has 32 divisors (see below), whose sum is σ = 310652928. Its totient is φ = 34294848.

The previous prime is 129022139. The next prime is 129022177. The reversal of 129022170 is 71220921.

It is a self number, because there is not a number n which added to its sum of digits gives 129022170.

It is not an unprimeable number, because it can be changed into a prime (129022177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2727 + ... + 16293.

It is an arithmetic number, because the mean of its divisors is an integer number (9707904).

Almost surely, 2^129022170 is an apocalyptic number.

129022170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129022170 is an abundant number, since it is smaller than the sum of its proper divisors (181630758).

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

129022170 is a wasteful number, since it uses less digits than its factorization.

129022170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13894.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 129022170 is about 11358.7926295007. The cubic root of 129022170 is about 505.3063788011.

The spelling of 129022170 in words is "one hundred twenty-nine million, twenty-two thousand, one hundred seventy".