442542 has 8 divisors (see below), whose sum is σ = 885096. Its totient is φ = 147512.

The previous prime is 442537. The next prime is 442571. The reversal of 442542 is 245244.

It is a sphenic number, since it is the product of 3 distinct primes.

442542 is an admirable number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 442542.

It is an unprimeable number.

442542 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 3 ways as a sum of consecutive naturals, for example, 36873 + ... + 36884.

It is an arithmetic number, because the mean of its divisors is an integer number (110637).

2⁴⁴²⁵⁴² is an apocalyptic number.

442542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

442542 is a wasteful number, since it uses less digits than its factorization.

442542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73762.

The product of its digits is 1280, while the sum is 21.

The square root of 442542 is about 665.2383031666. The cubic root of 442542 is about 76.2052393391.

Adding to 442542 its reverse (245244), we get a palindrome (687786).

The spelling of 442542 in words is "four hundred forty-two thousand, five hundred forty-two".