400244431142 has 8 divisors (see below), whose sum is σ = 619733312832. Its totient is φ = 193666660200.

The previous prime is 400244431133. The next prime is 400244431151. The reversal of 400244431142 is 241134442004.

It is an interprime number because it is at equal distance from previous prime (400244431133) and next prime (400244431151).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3227777609 + ... + 3227777732.

It is an arithmetic number, because the mean of its divisors is an integer number (77466664104).

Almost surely, 2^400244431142 is an apocalyptic number.

400244431142 is a deficient number, since it is larger than the sum of its proper divisors (219488881690).

400244431142 is a wasteful number, since it uses less digits than its factorization.

400244431142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6455555374.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 400244431142 its reverse (241134442004), we get a palindrome (641378873146).

The spelling of 400244431142 in words is "four hundred billion, two hundred forty-four million, four hundred thirty-one thousand, one hundred forty-two".