256120754 has 4 divisors (see below), whose sum is σ = 384181134. Its totient is φ = 128060376.

The previous prime is 256120723. The next prime is 256120757. The reversal of 256120754 is 457021652.

256120754 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 218359729 + 37761025 = 14777^2 + 6145^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 256120754.

It is not an unprimeable number, because it can be changed into a prime (256120757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64030187 + ... + 64030190.

Almost surely, 2^256120754 is an apocalyptic number.

256120754 is a deficient number, since it is larger than the sum of its proper divisors (128060380).

256120754 is a wasteful number, since it uses less digits than its factorization.

256120754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128060379.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 256120754 is about 16003.7731176120. The cubic root of 256120754 is about 635.0602410454.

The spelling of 256120754 in words is "two hundred fifty-six million, one hundred twenty thousand, seven hundred fifty-four".