42220392 has 32 divisors (see below), whose sum is σ = 105715680. Its totient is φ = 14051520.

The previous prime is 42220379. The next prime is 42220393. The reversal of 42220392 is 29302224.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (42220393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23643 + ... + 25365.

It is an arithmetic number, because the mean of its divisors is an integer number (3303615).

Almost surely, 2^42220392 is an apocalyptic number.

It is an amenable number.

42220392 is an abundant number, since it is smaller than the sum of its proper divisors (63495288).

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

42220392 is a wasteful number, since it uses less digits than its factorization.

42220392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753 (or 2749 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 42220392 is about 6497.7220623846. The cubic root of 42220392 is about 348.2096108053.

The spelling of 42220392 in words is "forty-two million, two hundred twenty thousand, three hundred ninety-two".