442402404 has 24 divisors (see below), whose sum is σ = 1056279840. Its totient is φ = 144037824.

The previous prime is 442402397. The next prime is 442402409. The reversal of 442402404 is 404204244.

It is not an unprimeable number, because it can be changed into a prime (442402409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428169 + ... + 429200.

It is an arithmetic number, because the mean of its divisors is an integer number (44011660).

Almost surely, 2^442402404 is an apocalyptic number.

It is an amenable number.

442402404 is an abundant number, since it is smaller than the sum of its proper divisors (613877436).

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

442402404 is a wasteful number, since it uses less digits than its factorization.

442402404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857419 (or 857417 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 442402404 is about 21033.3640675951. The cubic root of 442402404 is about 761.9722573789.

Adding to 442402404 its reverse (404204244), we get a palindrome (846606648).

The spelling of 442402404 in words is "four hundred forty-two million, four hundred two thousand, four hundred four".