256258842 has 32 divisors (see below), whose sum is σ = 589680000. Its totient is φ = 72723648.

The previous prime is 256258837. The next prime is 256258861. The reversal of 256258842 is 248852652.

256258842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 256258794 and 256258803.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14217 + ... + 26732.

It is an arithmetic number, because the mean of its divisors is an integer number (18427500).

Almost surely, 2^256258842 is an apocalyptic number.

256258842 is an abundant number, since it is smaller than the sum of its proper divisors (333421158).

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

256258842 is a wasteful number, since it uses less digits than its factorization.

256258842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41110.

The product of its digits is 307200, while the sum is 42.

The square root of 256258842 is about 16008.0867688803. The cubic root of 256258842 is about 635.1743518593.

The spelling of 256258842 in words is "two hundred fifty-six million, two hundred fifty-eight thousand, eight hundred forty-two".