129892112 has 40 divisors (see below), whose sum is σ = 291576576. Its totient is φ = 54902016.

The previous prime is 129892093. The next prime is 129892117. The reversal of 129892112 is 211298921.

It is not an unprimeable number, because it can be changed into a prime (129892117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233 + ... + 16119.

Almost surely, 2^129892112 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 129892112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145788288).

129892112 is an abundant number, since it is smaller than the sum of its proper divisors (161684464).

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

129892112 is a wasteful number, since it uses less digits than its factorization.

129892112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15975 (or 15969 counting only the distinct ones).

The product of its digits is 5184, while the sum is 35.

The square root of 129892112 is about 11397.0220671893. The cubic root of 129892112 is about 506.4395249945.

The spelling of 129892112 in words is "one hundred twenty-nine million, eight hundred ninety-two thousand, one hundred twelve".