129013230 has 64 divisors (see below), whose sum is σ = 328976640. Its totient is φ = 32288256.

The previous prime is 129013189. The next prime is 129013277. The reversal of 129013230 is 32310921.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 129013197 and 129013206.

It is a congruent number.

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, 63409 + ... + 65411.

It is an arithmetic number, because the mean of its divisors is an integer number (5140260).

Almost surely, 2^129013230 is an apocalyptic number.

129013230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 129013230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164488320).

129013230 is an abundant number, since it is smaller than the sum of its proper divisors (199963410).

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

129013230 is a wasteful number, since it uses less digits than its factorization.

129013230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 129013230 is about 11358.3990949429. The cubic root of 129013230 is about 505.2947075683.

The spelling of 129013230 in words is "one hundred twenty-nine million, thirteen thousand, two hundred thirty".