129116112 has 40 divisors (see below), whose sum is σ = 348055104. Its totient is φ = 41167104.

The previous prime is 129116087. The next prime is 129116123. The reversal of 129116112 is 211611921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57373 + ... + 59580.

Almost surely, 2^129116112 is an apocalyptic number.

129116112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129116112 is an abundant number, since it is smaller than the sum of its proper divisors (218938992).

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

129116112 is a wasteful number, since it uses less digits than its factorization.

129116112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116987 (or 116981 counting only the distinct ones).

The product of its digits is 216, while the sum is 24.

The square root of 129116112 is about 11362.9270876830. The cubic root of 129116112 is about 505.4289881572.

The spelling of 129116112 in words is "one hundred twenty-nine million, one hundred sixteen thousand, one hundred twelve".