42213256 has 8 divisors (see below), whose sum is σ = 79149870. Its totient is φ = 21106624.

The previous prime is 42213233. The next prime is 42213271. The reversal of 42213256 is 65231224.

It can be written as a sum of positive squares in only one way, i.e., 22410756 + 19802500 = 4734^2 + 4450^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 42213256.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2638321 + ... + 2638336.

Almost surely, 2^42213256 is an apocalyptic number.

It is an amenable number.

42213256 is a deficient number, since it is larger than the sum of its proper divisors (36936614).

42213256 is a wasteful number, since it uses less digits than its factorization.

42213256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5276663 (or 5276659 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 42213256 is about 6497.1729236646. The cubic root of 42213256 is about 348.1899918197.

The spelling of 42213256 in words is "forty-two million, two hundred thirteen thousand, two hundred fifty-six".