112839257 has 4 divisors (see below), whose sum is σ = 115591476. Its totient is φ = 110087040.

The previous prime is 112839253. The next prime is 112839263. The reversal of 112839257 is 752938211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2253001 + 110586256 = 1501^2 + 10516^2 .

It is a cyclic number.

It is not a de Polignac number, because 112839257 - 2² = 112839253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 112839257.

It is not an unprimeable number, because it can be changed into a prime (112839253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1376048 + ... + 1376129.

It is an arithmetic number, because the mean of its divisors is an integer number (28897869).

Almost surely, 2^112839257 is an apocalyptic number.

It is an amenable number.

112839257 is a deficient number, since it is larger than the sum of its proper divisors (2752219).

112839257 is an equidigital number, since it uses as much as digits as its factorization.

112839257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752218.

The product of its digits is 30240, while the sum is 38.

The square root of 112839257 is about 10622.5824073057. The cubic root of 112839257 is about 483.2294631598.

The spelling of 112839257 in words is "one hundred twelve million, eight hundred thirty-nine thousand, two hundred fifty-seven".