256042936 has 32 divisors (see below), whose sum is σ = 506246400. Its totient is φ = 121068000.

The previous prime is 256042931. The next prime is 256042937. The reversal of 256042936 is 639240652.

It is a junction number, because it is equal to n+sod(n) for n = 256042895 and 256042904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256042931) 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, 113031 + ... + 115273.

It is an arithmetic number, because the mean of its divisors is an integer number (15820200).

Almost surely, 2^256042936 is an apocalyptic number.

It is an amenable number.

256042936 is a deficient number, since it is larger than the sum of its proper divisors (250203464).

256042936 is a wasteful number, since it uses less digits than its factorization.

256042936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3019 (or 3015 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 256042936 is about 16001.3416937456. The cubic root of 256042936 is about 634.9959170589.

The spelling of 256042936 in words is "two hundred fifty-six million, forty-two thousand, nine hundred thirty-six".