42220578 has 16 divisors (see below), whose sum is σ = 87353280. Its totient is φ = 13588176.

The previous prime is 42220567. The next prime is 42220579. The reversal of 42220578 is 87502224.

It is not an unprimeable number, because it can be changed into a prime (42220579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121150 + ... + 121497.

It is an arithmetic number, because the mean of its divisors is an integer number (5459580).

Almost surely, 2^42220578 is an apocalyptic number.

42220578 is an abundant number, since it is smaller than the sum of its proper divisors (45132702).

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

42220578 is a wasteful number, since it uses less digits than its factorization.

42220578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242681.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 42220578 is about 6497.7363750771. The cubic root of 42220578 is about 348.2101221450.

The spelling of 42220578 in words is "forty-two million, two hundred twenty thousand, five hundred seventy-eight".