42222256 has 20 divisors (see below), whose sum is σ = 86111800. Its totient is φ = 19999872.

The previous prime is 42222253. The next prime is 42222281. The reversal of 42222256 is 65222224.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42222256.

It is not an unprimeable number, because it can be changed into a prime (42222253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69141 + ... + 69748.

It is an arithmetic number, because the mean of its divisors is an integer number (4305590).

Almost surely, 2^42222256 is an apocalyptic number.

It is an amenable number.

42222256 is an abundant number, since it is smaller than the sum of its proper divisors (43889544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42222256 is a wasteful number, since it uses less digits than its factorization.

42222256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138916 (or 138910 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 42222256 is about 6497.8654956839. The cubic root of 42222256 is about 348.2147351313.

The spelling of 42222256 in words is "forty-two million, two hundred twenty-two thousand, two hundred fifty-six".