404242004 has 12 divisors (see below), whose sum is σ = 709685844. Its totient is φ = 201474624.

The previous prime is 404241977. The next prime is 404242079. The reversal of 404242004 is 400242404.

It can be written as a sum of positive squares in 2 ways, for example, as 34833604 + 369408400 = 5902^2 + 19220^2 .

It is a congruent number.

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, 160187 + ... + 162690.

It is an arithmetic number, because the mean of its divisors is an integer number (59140487).

Almost surely, 2^404242004 is an apocalyptic number.

It is an amenable number.

404242004 is a deficient number, since it is larger than the sum of its proper divisors (305443840).

404242004 is a wasteful number, since it uses less digits than its factorization.

404242004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323194 (or 323192 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 404242004 is about 20105.7704154802. The cubic root of 404242004 is about 739.4017590049.

Adding to 404242004 its reverse (400242404), we get a palindrome (804484408).

The spelling of 404242004 in words is "four hundred four million, two hundred forty-two thousand, four".