256423142224 has 20 divisors (see below), whose sum is σ = 497379978144. Its totient is φ = 128067018848.

The previous prime is 256423142203. The next prime is 256423142231. The reversal of 256423142224 is 422241324652.

It is a happy number.

It is a congruent number.

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, 9019882 + ... + 9048265.

Almost surely, 2^256423142224 is an apocalyptic number.

It is an amenable number.

256423142224 is a deficient number, since it is larger than the sum of its proper divisors (240956835920).

256423142224 is a wasteful number, since it uses less digits than its factorization.

256423142224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18069042 (or 18069036 counting only the distinct ones).

The product of its digits is 184320, while the sum is 37.

Adding to 256423142224 its reverse (422241324652), we get a palindrome (678664466876).

The spelling of 256423142224 in words is "two hundred fifty-six billion, four hundred twenty-three million, one hundred forty-two thousand, two hundred twenty-four".