400244042242 has 48 divisors (see below), whose sum is σ = 697187191680. Its totient is φ = 171918195680.

The previous prime is 400244042207. The next prime is 400244042257. The reversal of 400244042242 is 242240442004.

It is a self number, because there is not a number n which added to its sum of digits gives 400244042242.

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 23 ways as a sum of consecutive naturals, for example, 276868 + ... + 936559.

It is an arithmetic number, because the mean of its divisors is an integer number (14524733160).

Almost surely, 2^400244042242 is an apocalyptic number.

400244042242 is a deficient number, since it is larger than the sum of its proper divisors (296943149438).

400244042242 is a wasteful number, since it uses less digits than its factorization.

400244042242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213527 (or 1213516 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 400244042242 its reverse (242240442004), we get a palindrome (642484484246).

The spelling of 400244042242 in words is "four hundred billion, two hundred forty-four million, forty-two thousand, two hundred forty-two".