129724029120 has 224 divisors, whose sum is σ = 495487756800. Its totient is φ = 28090589184.

The previous prime is 129724029119. The next prime is 129724029137. The reversal of 129724029120 is 21920427921.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×129724029120² (a number of 23 digits) contains 22 as substring.

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, 380325 + ... + 635684.

Almost surely, 2^129724029120 is an apocalyptic number.

129724029120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129724029120 is an abundant number, since it is smaller than the sum of its proper divisors (365763727680).

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

129724029120 is a wasteful number, since it uses less digits than its factorization.

129724029120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016055 (or 1016045 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 129724029120 in words is "one hundred twenty-nine billion, seven hundred twenty-four million, twenty-nine thousand, one hundred twenty".