256376242 has 8 divisors (see below), whose sum is σ = 385953516. Its totient is φ = 127725072.

The previous prime is 256376233. The next prime is 256376249. The reversal of 256376242 is 242673652.

It can be written as a sum of positive squares in 2 ways, for example, as 192071881 + 64304361 = 13859^2 + 8019^2 .

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

It is not an unprimeable number, because it can be changed into a prime (256376249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230833 + ... + 231940.

Almost surely, 2^256376242 is an apocalyptic number.

256376242 is a deficient number, since it is larger than the sum of its proper divisors (129577274).

256376242 is a wasteful number, since it uses less digits than its factorization.

256376242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463052.

The product of its digits is 120960, while the sum is 37.

The square root of 256376242 is about 16011.7532456630. The cubic root of 256376242 is about 635.2713346388.

The spelling of 256376242 in words is "two hundred fifty-six million, three hundred seventy-six thousand, two hundred forty-two".