64042256 has 10 divisors (see below), whose sum is σ = 124081902. Its totient is φ = 32021120.

The previous prime is 64042241. The next prime is 64042261. The reversal of 64042256 is 65224046.

It can be written as a sum of positive squares in only one way, i.e., 52070656 + 11971600 = 7216^2 + 3460^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2001305 + ... + 2001336.

Almost surely, 2^64042256 is an apocalyptic number.

It is an amenable number.

64042256 is a deficient number, since it is larger than the sum of its proper divisors (60039646).

64042256 is a wasteful number, since it uses less digits than its factorization.

64042256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002649 (or 4002643 counting only the distinct ones).

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

The square root of 64042256 is about 8002.6405642138. The cubic root of 64042256 is about 400.0880139658.

The spelling of 64042256 in words is "sixty-four million, forty-two thousand, two hundred fifty-six".