442524004 has 24 divisors (see below), whose sum is σ = 838613048. Its totient is φ = 203109120.

The previous prime is 442523989. The next prime is 442524023. The reversal of 442524004 is 400425244.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11546404 + 430977600 = 3398^2 + 20760^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 442524004.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 14097 + ... + 32920.

Almost surely, 2^442524004 is an apocalyptic number.

It is an amenable number.

442524004 is a deficient number, since it is larger than the sum of its proper divisors (396089044).

442524004 is a wasteful number, since it uses less digits than its factorization.

442524004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47215 (or 47213 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 442524004 is about 21036.2545145280. The cubic root of 442524004 is about 762.0420636140.

Adding to 442524004 its reverse (400425244), we get a palindrome (842949248).

The spelling of 442524004 in words is "four hundred forty-two million, five hundred twenty-four thousand, four".