422401566 has 16 divisors (see below), whose sum is σ = 845005824. Its totient is φ = 140766744.

The previous prime is 422401547. The next prime is 422401621. The reversal of 422401566 is 665104224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40221 + ... + 49623.

It is an arithmetic number, because the mean of its divisors is an integer number (52812864).

Almost surely, 2^422401566 is an apocalyptic number.

422401566 is an abundant number, since it is smaller than the sum of its proper divisors (422604258).

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

422401566 is a wasteful number, since it uses less digits than its factorization.

422401566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16895.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 422401566 is about 20552.4102236210. The cubic root of 422401566 is about 750.3119093765.

The spelling of 422401566 in words is "four hundred twenty-two million, four hundred one thousand, five hundred sixty-six".