129124960272 has 600 divisors, whose sum is σ = 475734828800. Its totient is φ = 33092167680.

The previous prime is 129124960259. The next prime is 129124960277. The reversal of 129124960272 is 272069421921.

129124960272 is a `hidden beast` number, since 1 + 2 + 91 + 2 + 496 + 0 + 2 + 72 = 666.

It is not an unprimeable number, because it can be changed into a prime (129124960277) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 86718504 + ... + 86719992.

Almost surely, 2^129124960272 is an apocalyptic number.

129124960272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129124960272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237867414400).

129124960272 is an abundant number, since it is smaller than the sum of its proper divisors (346609868528).

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

129124960272 is a wasteful number, since it uses less digits than its factorization.

129124960272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617 (or 1591 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 129124960272 in words is "one hundred twenty-nine billion, one hundred twenty-four million, nine hundred sixty thousand, two hundred seventy-two".