442232406 has 64 divisors (see below), whose sum is σ = 1225244160. Its totient is φ = 114864480.

The previous prime is 442232387. The next prime is 442232411. The reversal of 442232406 is 604232244.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 442232406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49021 + ... + 57336.

It is an arithmetic number, because the mean of its divisors is an integer number (19144440).

Almost surely, 2^442232406 is an apocalyptic number.

442232406 is an abundant number, since it is smaller than the sum of its proper divisors (783011754).

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

442232406 is a wasteful number, since it uses less digits than its factorization.

442232406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106386 (or 106380 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 442232406 is about 21029.3225283175. The cubic root of 442232406 is about 761.8746461290.

The spelling of 442232406 in words is "four hundred forty-two million, two hundred thirty-two thousand, four hundred six".