442005424 has 20 divisors (see below), whose sum is σ = 978726544. Its totient is φ = 189430848.

The previous prime is 442005353. The next prime is 442005433. The reversal of 442005424 is 424500244.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1973127 + ... + 1973350.

Almost surely, 2^442005424 is an apocalyptic number.

It is an amenable number.

442005424 is an abundant number, since it is smaller than the sum of its proper divisors (536721120).

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

442005424 is a wasteful number, since it uses less digits than its factorization.

442005424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3946492 (or 3946486 counting only the distinct ones).

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

The square root of 442005424 is about 21023.9250379181. The cubic root of 442005424 is about 761.7442761971.

Adding to 442005424 its reverse (424500244), we get a palindrome (866505668).

The spelling of 442005424 in words is "four hundred forty-two million, five thousand, four hundred twenty-four".