112139961 has 8 divisors (see below), whose sum is σ = 153166944. Its totient is φ = 72936480.

The previous prime is 112139953. The next prime is 112139969. The reversal of 112139961 is 169931211.

It is an interprime number because it is at equal distance from previous prime (112139953) and next prime (112139969).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 112139961 - 2³ = 112139953 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (112139969) by changing a digit.

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, 455731 + ... + 455976.

It is an arithmetic number, because the mean of its divisors is an integer number (19145868).

Almost surely, 2^112139961 is an apocalyptic number.

It is an amenable number.

112139961 is a deficient number, since it is larger than the sum of its proper divisors (41026983).

112139961 is an equidigital number, since it uses as much as digits as its factorization.

112139961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911751.

The product of its digits is 2916, while the sum is 33.

The square root of 112139961 is about 10589.6157154072. The cubic root of 112139961 is about 482.2291584931.

The spelling of 112139961 in words is "one hundred twelve million, one hundred thirty-nine thousand, nine hundred sixty-one".