404402042 has 64 divisors (see below), whose sum is σ = 732067200. Its totient is φ = 165473280.

The previous prime is 404402041. The next prime is 404402051. The reversal of 404402042 is 240204404.

It is not an unprimeable number, because it can be changed into a prime (404402041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 884678 + ... + 885134.

It is an arithmetic number, because the mean of its divisors is an integer number (11438550).

Almost surely, 2^404402042 is an apocalyptic number.

404402042 is a deficient number, since it is larger than the sum of its proper divisors (327665158).

404402042 is a wasteful number, since it uses less digits than its factorization.

404402042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591.

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 404402042 is about 20109.7499238553. The cubic root of 404402042 is about 739.4993216573.

Adding to 404402042 its reverse (240204404), we get a palindrome (644606446).

The spelling of 404402042 in words is "four hundred four million, four hundred two thousand, forty-two".