442044 has 24 divisors (see below), whose sum is σ = 1146320. Its totient is φ = 147312.

The previous prime is 442033. The next prime is 442061. The reversal of 442044 is 440244.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 9.

It is a congruent number.

It is an unprimeable number.

442044 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 1939 + ... + 2154.

2⁴⁴²⁰⁴⁴ is an apocalyptic number.

It is an amenable number.

442044 is an abundant number, since it is smaller than the sum of its proper divisors (704276).

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

442044 is a wasteful number, since it uses less digits than its factorization.

442044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4106 (or 4098 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 442044 is about 664.8638958464. The cubic root of 442044 is about 76.1766435950.

Adding to 442044 its reverse (440244), we get a palindrome (882288).

The spelling of 442044 in words is "four hundred forty-two thousand, forty-four", and thus it is an iban number.