129412192 has 96 divisors (see below), whose sum is σ = 330220800. Its totient is φ = 48480768.

The previous prime is 129412163. The next prime is 129412207. The reversal of 129412192 is 291214921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54159 + ... + 56497.

It is an arithmetic number, because the mean of its divisors is an integer number (3439800).

Almost surely, 2^129412192 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 129412192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165110400).

129412192 is an abundant number, since it is smaller than the sum of its proper divisors (200808608).

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

129412192 is a wasteful number, since it uses less digits than its factorization.

129412192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388 (or 2380 counting only the distinct ones).

The product of its digits is 2592, while the sum is 31.

The square root of 129412192 is about 11375.9479604998. The cubic root of 129412192 is about 505.8150313112.

The spelling of 129412192 in words is "one hundred twenty-nine million, four hundred twelve thousand, one hundred ninety-two".