256341242 has 8 divisors (see below), whose sum is σ = 384585300. Its totient is φ = 128146144.

The previous prime is 256341227. The next prime is 256341251. The reversal of 256341242 is 242143652.

256341242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 165920161 + 90421081 = 12881^2 + 9509^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6734 + ... + 23622.

Almost surely, 2^256341242 is an apocalyptic number.

256341242 is a deficient number, since it is larger than the sum of its proper divisors (128244058).

256341242 is a wasteful number, since it uses less digits than its factorization.

256341242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24480.

The product of its digits is 11520, while the sum is 29.

The square root of 256341242 is about 16010.6602612135. The cubic root of 256341242 is about 635.2424246425.

Adding to 256341242 its reverse (242143652), we get a palindrome (498484894).

The spelling of 256341242 in words is "two hundred fifty-six million, three hundred forty-one thousand, two hundred forty-two".