256242124 has 12 divisors (see below), whose sum is σ = 454740048. Its totient is φ = 126316400.

The previous prime is 256242083. The next prime is 256242163. The reversal of 256242124 is 421242652.

It is a super-2 number, since 2×256242124² = 131320052224062752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 256242092 and 256242101.

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, 450847 + ... + 451414.

It is an arithmetic number, because the mean of its divisors is an integer number (37895004).

Almost surely, 2^256242124 is an apocalyptic number.

It is an amenable number.

256242124 is a deficient number, since it is larger than the sum of its proper divisors (198497924).

256242124 is a wasteful number, since it uses less digits than its factorization.

256242124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902336 (or 902334 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 256242124 is about 16007.5645867821. The cubic root of 256242124 is about 635.1605389041.

Adding to 256242124 its reverse (421242652), we get a palindrome (677484776).

The spelling of 256242124 in words is "two hundred fifty-six million, two hundred forty-two thousand, one hundred twenty-four".