129954156 has 24 divisors (see below), whose sum is σ = 308199024. Its totient is φ = 42607680.

The previous prime is 129954109. The next prime is 129954193. The reversal of 129954156 is 651459921.

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, 88035 + ... + 89498.

It is an arithmetic number, because the mean of its divisors is an integer number (12841626).

Almost surely, 2^129954156 is an apocalyptic number.

It is an amenable number.

129954156 is an abundant number, since it is smaller than the sum of its proper divisors (178244868).

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

129954156 is a wasteful number, since it uses less digits than its factorization.

129954156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177601 (or 177599 counting only the distinct ones).

The product of its digits is 97200, while the sum is 42.

The square root of 129954156 is about 11399.7436813290. The cubic root of 129954156 is about 506.5201471145.

It can be divided in two parts, 1299 and 54156, that added together give a palindrome (55455).

The spelling of 129954156 in words is "one hundred twenty-nine million, nine hundred fifty-four thousand, one hundred fifty-six".