129054156 has 96 divisors (see below), whose sum is σ = 395243520. Its totient is φ = 31752000.

The previous prime is 129054119. The next prime is 129054161. The reversal of 129054156 is 651450921.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13881 + ... + 21231.

It is an arithmetic number, because the mean of its divisors is an integer number (4117120).

Almost surely, 2^129054156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129054156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197621760).

129054156 is an abundant number, since it is smaller than the sum of its proper divisors (266189364).

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

129054156 is a wasteful number, since it uses less digits than its factorization.

129054156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7395 (or 7393 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 129054156 is about 11360.2005263992. The cubic root of 129054156 is about 505.3481323343.

The spelling of 129054156 in words is "one hundred twenty-nine million, fifty-four thousand, one hundred fifty-six".