400556143042 has 8 divisors (see below), whose sum is σ = 655455506832. Its totient is φ = 182070974100.

The previous prime is 400556143019. The next prime is 400556143049. The reversal of 400556143042 is 240341655004.

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

It is a junction number, because it is equal to n+sod(n) for n = 400556142989 and 400556143007.

It is not an unprimeable number, because it can be changed into a prime (400556143049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9103548684 + ... + 9103548727.

It is an arithmetic number, because the mean of its divisors is an integer number (81931938354).

Almost surely, 2^400556143042 is an apocalyptic number.

400556143042 is a deficient number, since it is larger than the sum of its proper divisors (254899363790).

400556143042 is a wasteful number, since it uses less digits than its factorization.

400556143042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18207097424.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 400556143042 its reverse (240341655004), we get a palindrome (640897798046).

The spelling of 400556143042 in words is "four hundred billion, five hundred fifty-six million, one hundred forty-three thousand, forty-two".