442012404 has 24 divisors (see below), whose sum is σ = 1033348960. Its totient is φ = 147053664.

The previous prime is 442012387. The next prime is 442012411. The reversal of 442012404 is 404210244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28939 + ... + 41490.

Almost surely, 2^442012404 is an apocalyptic number.

It is an amenable number.

442012404 is an abundant number, since it is smaller than the sum of its proper divisors (591336556).

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

442012404 is a wasteful number, since it uses less digits than its factorization.

442012404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70959 (or 70957 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 442012404 is about 21024.0910386157. The cubic root of 442012404 is about 761.7482859119.

Adding to 442012404 its reverse (404210244), we get a palindrome (846222648).

The spelling of 442012404 in words is "four hundred forty-two million, twelve thousand, four hundred four".