42225222 has 16 divisors (see below), whose sum is σ = 90946800. Its totient is φ = 12992352.

The previous prime is 42225173. The next prime is 42225257. The reversal of 42225222 is 22252224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270597 + ... + 270752.

It is an arithmetic number, because the mean of its divisors is an integer number (5684175).

Almost surely, 2^42225222 is an apocalyptic number.

42225222 is an abundant number, since it is smaller than the sum of its proper divisors (48721578).

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

42225222 is a wasteful number, since it uses less digits than its factorization.

42225222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541367.

The product of its digits is 1280, while the sum is 21.

The square root of 42225222 is about 6498.0937204691. The cubic root of 42225222 is about 348.2228886568. Note that the first 3 decimals are identical.

Adding to 42225222 its reverse (22252224), we get a palindrome (64477446).

The spelling of 42225222 in words is "forty-two million, two hundred twenty-five thousand, two hundred twenty-two".