442004 has 6 divisors (see below), whose sum is σ = 773514. Its totient is φ = 221000.

The previous prime is 442003. The next prime is 442007. The reversal of 442004 is 400244.

It can be written as a sum of positive squares in only one way, i.e., 425104 + 16900 = 652^2 + 130^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 442004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55247 + ... + 55254.

It is an arithmetic number, because the mean of its divisors is an integer number (128919).

2⁴⁴²⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

442004 is a deficient number, since it is larger than the sum of its proper divisors (331510).

442004 is a wasteful number, since it uses less digits than its factorization.

442004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110505 (or 110503 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 442004 is about 664.8338138212. The cubic root of 442004 is about 76.1743458164.

Adding to 442004 its reverse (400244), we get a palindrome (842248).

It can be divided in two parts, 44 and 2004, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 442004 in words is "four hundred forty-two thousand, four", and thus it is an iban number.