400142231044 has 24 divisors (see below), whose sum is σ = 705682520928. Its totient is φ = 198519988800.

The previous prime is 400142231009. The next prime is 400142231059. The reversal of 400142231044 is 440132241004.

It is a super-2 number, since 2×400142231044² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1041519 + ... + 1372969.

It is an arithmetic number, because the mean of its divisors is an integer number (29403438372).

Almost surely, 2^400142231044 is an apocalyptic number.

It is an amenable number.

400142231044 is a deficient number, since it is larger than the sum of its proper divisors (305540289884).

400142231044 is a wasteful number, since it uses less digits than its factorization.

400142231044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333795 (or 333793 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 400142231044 its reverse (440132241004), we get a palindrome (840274472048).

The spelling of 400142231044 in words is "four hundred billion, one hundred forty-two million, two hundred thirty-one thousand, forty-four".