256253242 has 32 divisors (see below), whose sum is σ = 452995200. Its totient is φ = 108662400.

The previous prime is 256253237. The next prime is 256253243. The reversal of 256253242 is 242352652.

256253242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (256253243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64617 + ... + 68467.

It is an arithmetic number, because the mean of its divisors is an integer number (14156100).

Almost surely, 2^256253242 is an apocalyptic number.

256253242 is a deficient number, since it is larger than the sum of its proper divisors (196741958).

256253242 is an equidigital number, since it uses as much as digits as its factorization.

256253242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3971 (or 3957 counting only the distinct ones).

The product of its digits is 28800, while the sum is 31.

The square root of 256253242 is about 16007.9118563290. The cubic root of 256253242 is about 635.1697250241.

The spelling of 256253242 in words is "two hundred fifty-six million, two hundred fifty-three thousand, two hundred forty-two".