42664222 has 8 divisors (see below), whose sum is σ = 64366776. Its totient is φ = 21208632.

The previous prime is 42664201. The next prime is 42664229. The reversal of 42664222 is 22246624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42664229) 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, 61308 + ... + 61999.

It is an arithmetic number, because the mean of its divisors is an integer number (8045847).

Almost surely, 2^42664222 is an apocalyptic number.

42664222 is a deficient number, since it is larger than the sum of its proper divisors (21702554).

42664222 is a wasteful number, since it uses less digits than its factorization.

42664222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123482.

The product of its digits is 9216, while the sum is 28.

The square root of 42664222 is about 6531.7855139311. The cubic root of 42664222 is about 349.4255119763.

The spelling of 42664222 in words is "forty-two million, six hundred sixty-four thousand, two hundred twenty-two".