42220255 has 16 divisors (see below), whose sum is σ = 63166464. Its totient is φ = 26318880.

The previous prime is 42220247. The next prime is 42220267. The reversal of 42220255 is 55202224.

It is a happy number.

It is not a de Polignac number, because 42220255 - 2³ = 42220247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54447 + ... + 55216.

It is an arithmetic number, because the mean of its divisors is an integer number (3947904).

Almost surely, 2^42220255 is an apocalyptic number.

42220255 is a deficient number, since it is larger than the sum of its proper divisors (20946209).

42220255 is a wasteful number, since it uses less digits than its factorization.

42220255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109686.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 42220255 is about 6497.7115202200. The cubic root of 42220255 is about 348.2092341724.

Adding to 42220255 its reverse (55202224), we get a palindrome (97422479).

The spelling of 42220255 in words is "forty-two million, two hundred twenty thousand, two hundred fifty-five".