400421332430404 has 24 divisors (see below), whose sum is σ = 731207348706240. Its totient is φ = 191505022715424.

The previous prime is 400421332430401. The next prime is 400421332430447. The reversal of 400421332430404 is 404034233124004.

It is a super-2 number, since 2×400421332430404² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400421332430404.

It is not an unprimeable number, because it can be changed into a prime (400421332430401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12105187 + ... + 30779509.

It is an arithmetic number, because the mean of its divisors is an integer number (30466972862760).

Almost surely, 2^{400421332430404} is an apocalyptic number.

It is an amenable number.

400421332430404 is a deficient number, since it is larger than the sum of its proper divisors (330786016275836).

400421332430404 is a wasteful number, since it uses less digits than its factorization.

400421332430404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18907419 (or 18907417 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 400421332430404 its reverse (404034233124004), we get a palindrome (804455565554408).

The spelling of 400421332430404 in words is "four hundred trillion, four hundred twenty-one billion, three hundred thirty-two million, four hundred thirty thousand, four hundred four".