4256564242 has 12 divisors (see below), whose sum is σ = 7427270430. Its totient is φ = 1824241776.

The previous prime is 4256564237. The next prime is 4256564251. The reversal of 4256564242 is 2424656524.

It can be written as a sum of positive squares in only one way, i.e., 3114867721 + 1141696521 = 55811^2 + 33789^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4256564195 and 4256564204.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21717067 + ... + 21717262.

Almost surely, 2^4256564242 is an apocalyptic number.

4256564242 is a deficient number, since it is larger than the sum of its proper divisors (3170706188).

4256564242 is a wasteful number, since it uses less digits than its factorization.

4256564242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43434345 (or 43434338 counting only the distinct ones).

The product of its digits is 460800, while the sum is 40.

The square root of 4256564242 is about 65242.3500649693. The cubic root of 4256564242 is about 1620.6394165918.

The spelling of 4256564242 in words is "four billion, two hundred fifty-six million, five hundred sixty-four thousand, two hundred forty-two".