404203042 has 4 divisors (see below), whose sum is σ = 606304566. Its totient is φ = 202101520.

The previous prime is 404203013. The next prime is 404203049. The reversal of 404203042 is 240302404.

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., 289306081 + 114896961 = 17009^2 + 10719^2 .

It is not an unprimeable number, because it can be changed into a prime (404203049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101050759 + ... + 101050762.

Almost surely, 2^404203042 is an apocalyptic number.

404203042 is a deficient number, since it is larger than the sum of its proper divisors (202101524).

404203042 is a wasteful number, since it uses less digits than its factorization.

404203042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202101523.

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

The square root of 404203042 is about 20104.8014663164. The cubic root of 404203042 is about 739.3780030232.

Adding to 404203042 its reverse (240302404), we get a palindrome (644505446).

The spelling of 404203042 in words is "four hundred four million, two hundred three thousand, forty-two".