129113922 has 24 divisors (see below), whose sum is σ = 300388176. Its totient is φ = 36889608.

The previous prime is 129113893. The next prime is 129113923. The reversal of 129113922 is 229311921.

It is a self number, because there is not a number n which added to its sum of digits gives 129113922.

It is not an unprimeable number, because it can be changed into a prime (129113923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 219288 + ... + 219875.

It is an arithmetic number, because the mean of its divisors is an integer number (12516174).

Almost surely, 2^129113922 is an apocalyptic number.

129113922 is an abundant number, since it is smaller than the sum of its proper divisors (171274254).

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

129113922 is a wasteful number, since it uses less digits than its factorization.

129113922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439182 (or 439175 counting only the distinct ones).

The product of its digits is 1944, while the sum is 30.

The square root of 129113922 is about 11362.8307212596. The cubic root of 129113922 is about 505.4261305336.

The spelling of 129113922 in words is "one hundred twenty-nine million, one hundred thirteen thousand, nine hundred twenty-two".