442566 has 24 divisors (see below), whose sum is σ = 1001520. Its totient is φ = 140976.

The previous prime is 442537. The next prime is 442571. The reversal of 442566 is 665244.

It is a happy number.

442566 is nontrivially palindromic in base 16.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

442566 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121 + ... + 948.

It is an arithmetic number, because the mean of its divisors is an integer number (41730).

2⁴⁴²⁵⁶⁶ is an apocalyptic number.

442566 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

442566 is an abundant number, since it is smaller than the sum of its proper divisors (558954).

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

442566 is a wasteful number, since it uses less digits than its factorization.

442566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100 (or 1097 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 442566 is about 665.2563415707. The cubic root of 442566 is about 76.2066169053.

The spelling of 442566 in words is "four hundred forty-two thousand, five hundred sixty-six".