129874752 has 168 divisors, whose sum is σ = 441569856. Its totient is φ = 37075968.

The previous prime is 129874739. The next prime is 129874783. The reversal of 129874752 is 257478921.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (168).

It is a junction number, because it is equal to n+sod(n) for n = 129874698 and 129874707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108268 + ... + 109460.

It is an arithmetic number, because the mean of its divisors is an integer number (2628392).

Almost surely, 2^129874752 is an apocalyptic number.

129874752 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 129874752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220784928).

129874752 is an abundant number, since it is smaller than the sum of its proper divisors (311695104).

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

129874752 is an equidigital number, since it uses as much as digits as its factorization.

129874752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227 (or 1205 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 129874752 is about 11396.2604392845. The cubic root of 129874752 is about 506.4169622134.

The spelling of 129874752 in words is "one hundred twenty-nine million, eight hundred seventy-four thousand, seven hundred fifty-two".