112129520 has 40 divisors (see below), whose sum is σ = 261356784. Its totient is φ = 44739072.

The previous prime is 112129517. The next prime is 112129543. The reversal of 112129520 is 25921211.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35027 + ... + 38093.

Almost surely, 2^112129520 is an apocalyptic number.

112129520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112129520 is an abundant number, since it is smaller than the sum of its proper divisors (149227264).

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

112129520 is a wasteful number, since it uses less digits than its factorization.

112129520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3537 (or 3531 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 112129520 is about 10589.1227209812. The cubic root of 112129520 is about 482.2141917472.

The spelling of 112129520 in words is "one hundred twelve million, one hundred twenty-nine thousand, five hundred twenty".