4256021312 has 56 divisors (see below), whose sum is σ = 8526926304. Its totient is φ = 2107602432.

The previous prime is 4256021251. The next prime is 4256021323. The reversal of 4256021312 is 2131206524.

It is a happy number.

It is a super-2 number, since 2×4256021312² = 36227434816396402688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4691963 + ... + 4692869.

Almost surely, 2^4256021312 is an apocalyptic number.

It is an amenable number.

4256021312 is an abundant number, since it is smaller than the sum of its proper divisors (4270904992).

4256021312 is a wasteful number, since it uses less digits than its factorization.

4256021312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543 (or 1533 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 4256021312 is about 65238.1890613159. The cubic root of 4256021312 is about 1620.5705088122.

Adding to 4256021312 its reverse (2131206524), we get a palindrome (6387227836).

The spelling of 4256021312 in words is "four billion, two hundred fifty-six million, twenty-one thousand, three hundred twelve".