256502242 has 8 divisors (see below), whose sum is σ = 405003600. Its totient is φ = 121501044.

The previous prime is 256502231. The next prime is 256502243. The reversal of 256502242 is 242205652.

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

It is a self number, because there is not a number n which added to its sum of digits gives 256502242.

It is not an unprimeable number, because it can be changed into a prime (256502243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3374992 + ... + 3375067.

It is an arithmetic number, because the mean of its divisors is an integer number (50625450).

Almost surely, 2^256502242 is an apocalyptic number.

256502242 is a deficient number, since it is larger than the sum of its proper divisors (148501358).

256502242 is a wasteful number, since it uses less digits than its factorization.

256502242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6750080.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 256502242 is about 16015.6873720737. The cubic root of 256502242 is about 635.3753888446.

Adding to 256502242 its reverse (242205652), we get a palindrome (498707894).

The spelling of 256502242 in words is "two hundred fifty-six million, five hundred two thousand, two hundred forty-two".