400421341021324 has 18 divisors (see below), whose sum is σ = 815143444222380. Its totient is φ = 171609146151912.

The previous prime is 400421341021321. The next prime is 400421341021337. The reversal of 400421341021324 is 423120143124004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (400421341021321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1021483012614 + ... + 1021483013005.

Almost surely, 2^{400421341021324} is an apocalyptic number.

It is an amenable number.

400421341021324 is an abundant number, since it is smaller than the sum of its proper divisors (414722103201056).

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

400421341021324 is a wasteful number, since it uses less digits than its factorization.

400421341021324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042966025637 (or 2042966025628 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 400421341021324 its reverse (423120143124004), we get a palindrome (823541484145328).

The spelling of 400421341021324 in words is "four hundred trillion, four hundred twenty-one billion, three hundred forty-one million, twenty-one thousand, three hundred twenty-four".