256842113 has 8 divisors (see below), whose sum is σ = 281003040. Its totient is φ = 232816480.

The previous prime is 256842073. The next prime is 256842151. The reversal of 256842113 is 311248652.

256842113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 256842113 - 2²² = 252647809 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 256842113.

It is not an unprimeable number, because it can be changed into a prime (256842413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29828 + ... + 37461.

It is an arithmetic number, because the mean of its divisors is an integer number (35125380).

Almost surely, 2^256842113 is an apocalyptic number.

It is an amenable number.

256842113 is a deficient number, since it is larger than the sum of its proper divisors (24160927).

256842113 is a wasteful number, since it uses less digits than its factorization.

256842113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67647.

The product of its digits is 11520, while the sum is 32.

The square root of 256842113 is about 16026.2944251003. The cubic root of 256842113 is about 635.6558936850.

The spelling of 256842113 in words is "two hundred fifty-six million, eight hundred forty-two thousand, one hundred thirteen".