404312042 has 8 divisors (see below), whose sum is σ = 607952100. Its totient is φ = 201661344.

The previous prime is 404312023. The next prime is 404312053. The reversal of 404312042 is 240213404.

It can be written as a sum of positive squares in 2 ways, for example, as 362178961 + 42133081 = 19031^2 + 6491^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 246317 + ... + 247952.

Almost surely, 2^404312042 is an apocalyptic number.

404312042 is a deficient number, since it is larger than the sum of its proper divisors (203640058).

404312042 is a wasteful number, since it uses less digits than its factorization.

404312042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494680.

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

The square root of 404312042 is about 20107.5120788227. The cubic root of 404312042 is about 739.4444588640. Note that the first 4 decimals are identical.

Adding to 404312042 its reverse (240213404), we get a palindrome (644525446).

The spelling of 404312042 in words is "four hundred four million, three hundred twelve thousand, forty-two".