256927942 has 8 divisors (see below), whose sum is σ = 388334232. Its totient is φ = 127483200.

The previous prime is 256927927. The next prime is 256927943. The reversal of 256927942 is 249729652.

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

It is a junction number, because it is equal to n+sod(n) for n = 256927892 and 256927901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256927943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490059 + ... + 490582.

It is an arithmetic number, because the mean of its divisors is an integer number (48541779).

Almost surely, 2^256927942 is an apocalyptic number.

256927942 is a deficient number, since it is larger than the sum of its proper divisors (131406290).

256927942 is a wasteful number, since it uses less digits than its factorization.

256927942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980774.

The product of its digits is 544320, while the sum is 46.

The square root of 256927942 is about 16028.9719570533. The cubic root of 256927942 is about 635.7266915681.

The spelling of 256927942 in words is "two hundred fifty-six million, nine hundred twenty-seven thousand, nine hundred forty-two".