404512442 has 4 divisors (see below), whose sum is σ = 606768666. Its totient is φ = 202256220.

The previous prime is 404512439. The next prime is 404512499. The reversal of 404512442 is 244215404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 388917841 + 15594601 = 19721^2 + 3949^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101128109 + ... + 101128112.

Almost surely, 2^404512442 is an apocalyptic number.

404512442 is a deficient number, since it is larger than the sum of its proper divisors (202256224).

404512442 is a wasteful number, since it uses less digits than its factorization.

404512442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202256223.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 404512442 is about 20112.4946737097. The cubic root of 404512442 is about 739.5666089016.

Adding to 404512442 its reverse (244215404), we get a palindrome (648727846).

The spelling of 404512442 in words is "four hundred four million, five hundred twelve thousand, four hundred forty-two".