112129172 has 12 divisors (see below), whose sum is σ = 198027060. Its totient is φ = 55550016.

The previous prime is 112129159. The next prime is 112129181. The reversal of 112129172 is 271921211.

It can be written as a sum of positive squares in 2 ways, for example, as 51351556 + 60777616 = 7166^2 + 7796^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128153 + ... + 129024.

It is an arithmetic number, because the mean of its divisors is an integer number (16502255).

Almost surely, 2^112129172 is an apocalyptic number.

It is an amenable number.

112129172 is a deficient number, since it is larger than the sum of its proper divisors (85897888).

112129172 is a wasteful number, since it uses less digits than its factorization.

112129172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257290 (or 257288 counting only the distinct ones).

The product of its digits is 504, while the sum is 26.

The square root of 112129172 is about 10589.1062890123. The cubic root of 112129172 is about 482.2136928875.

The spelling of 112129172 in words is "one hundred twelve million, one hundred twenty-nine thousand, one hundred seventy-two".