404042312 has 16 divisors (see below), whose sum is σ = 760169340. Its totient is φ = 201330496.

The previous prime is 404042299. The next prime is 404042339. The reversal of 404042312 is 213240404.

It can be written as a sum of positive squares in 2 ways, for example, as 321341476 + 82700836 = 17926^2 + 9094^2 .

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, 83843 + ... + 88530.

Almost surely, 2^404042312 is an apocalyptic number.

It is an amenable number.

404042312 is a deficient number, since it is larger than the sum of its proper divisors (356127028).

404042312 is a wasteful number, since it uses less digits than its factorization.

404042312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172672 (or 172668 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 404042312 is about 20100.8037650239. The cubic root of 404042312 is about 739.2799862926.

Adding to 404042312 its reverse (213240404), we get a palindrome (617282716).

The spelling of 404042312 in words is "four hundred four million, forty-two thousand, three hundred twelve".