42221366 has 16 divisors (see below), whose sum is σ = 70958160. Its totient is φ = 18672480.

The previous prime is 42221359. The next prime is 42221383. The reversal of 42221366 is 66312224.

42221366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

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, 25121 + ... + 26748.

It is an arithmetic number, because the mean of its divisors is an integer number (4434885).

Almost surely, 2^42221366 is an apocalyptic number.

42221366 is a deficient number, since it is larger than the sum of its proper divisors (28736794).

42221366 is a wasteful number, since it uses less digits than its factorization.

42221366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51919.

The product of its digits is 3456, while the sum is 26.

The square root of 42221366 is about 6497.7970112954. The cubic root of 42221366 is about 348.2122884494.

The spelling of 42221366 in words is "forty-two million, two hundred twenty-one thousand, three hundred sixty-six".