42220988 has 24 divisors (see below), whose sum is σ = 75404112. Its totient is φ = 20680704.

The previous prime is 42220963. The next prime is 42221027. The reversal of 42220988 is 88902224.

42220988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42220988² = 3565223655392288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68570 + ... + 69182.

It is an arithmetic number, because the mean of its divisors is an integer number (3141838).

Almost surely, 2^42220988 is an apocalyptic number.

It is an amenable number.

42220988 is a deficient number, since it is larger than the sum of its proper divisors (33183124).

42220988 is a wasteful number, since it uses less digits than its factorization.

42220988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 42220988 is about 6497.7679244491. The cubic root of 42220988 is about 348.2112492864.

The spelling of 42220988 in words is "forty-two million, two hundred twenty thousand, nine hundred eighty-eight".