404320042 has 32 divisors (see below), whose sum is σ = 719262720. Its totient is φ = 166803840.

The previous prime is 404320039. The next prime is 404320043. The reversal of 404320042 is 240023404.

It is not an unprimeable number, because it can be changed into a prime (404320043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83134 + ... + 87862.

It is an arithmetic number, because the mean of its divisors is an integer number (22476960).

Almost surely, 2^404320042 is an apocalyptic number.

404320042 is a deficient number, since it is larger than the sum of its proper divisors (314942678).

404320042 is a wasteful number, since it uses less digits than its factorization.

404320042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4966.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 404320042 is about 20107.7110084664. The cubic root of 404320042 is about 739.4493358864.

Adding to 404320042 its reverse (240023404), we get a palindrome (644343446).

The spelling of 404320042 in words is "four hundred four million, three hundred twenty thousand, forty-two".