112100139 has 16 divisors (see below), whose sum is σ = 166260640. Its totient is φ = 74649600.

The previous prime is 112100111. The next prime is 112100143. The reversal of 112100139 is 931001211.

It is a de Polignac number, because none of the positive numbers 2^k-112100139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112100189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30699 + ... + 34155.

It is an arithmetic number, because the mean of its divisors is an integer number (10391290).

Almost surely, 2^112100139 is an apocalyptic number.

112100139 is a deficient number, since it is larger than the sum of its proper divisors (54160501).

112100139 is a wasteful number, since it uses less digits than its factorization.

112100139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4667 (or 4661 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 112100139 is about 10587.7353102540. The cubic root of 112100139 is about 482.1720703005.

The spelling of 112100139 in words is "one hundred twelve million, one hundred thousand, one hundred thirty-nine".