404400242240 has 28 divisors (see below), whose sum is σ = 962978077596. Its totient is φ = 161760096768.

The previous prime is 404400242177. The next prime is 404400242251. The reversal of 404400242240 is 42242004404.

It can be written as a sum of positive squares in 2 ways, for example, as 129899693056 + 274500549184 = 360416^2 + 523928^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631875059 + ... + 631875698.

Almost surely, 2^404400242240 is an apocalyptic number.

404400242240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404400242240 is an abundant number, since it is smaller than the sum of its proper divisors (558577835356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404400242240 is a wasteful number, since it uses less digits than its factorization.

404400242240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263750774 (or 1263750764 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 404400242240 its reverse (42242004404), we get a palindrome (446642246644).

The spelling of 404400242240 in words is "four hundred four billion, four hundred million, two hundred forty-two thousand, two hundred forty".