404231242 has 4 divisors (see below), whose sum is σ = 606346866. Its totient is φ = 202115620.

The previous prime is 404231237. The next prime is 404231291. The reversal of 404231242 is 242132404.

It is a happy number.

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., 377097561 + 27133681 = 19419^2 + 5209^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101057809 + ... + 101057812.

Almost surely, 2^404231242 is an apocalyptic number.

404231242 is a deficient number, since it is larger than the sum of its proper divisors (202115624).

404231242 is a wasteful number, since it uses less digits than its factorization.

404231242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202115623.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 404231242 is about 20105.5027790901. The cubic root of 404231242 is about 739.3951973312.

Adding to 404231242 its reverse (242132404), we get a palindrome (646363646).

The spelling of 404231242 in words is "four hundred four million, two hundred thirty-one thousand, two hundred forty-two".