421040440414504 has 8 divisors (see below), whose sum is σ = 789450825777210. Its totient is φ = 210520220207248.

The previous prime is 421040440414499. The next prime is 421040440414511. The reversal of 421040440414504 is 405414044040124.

It can be written as a sum of positive squares in only one way, i.e., 418595313998404 + 2445126416100 = 20459602^2 + 1563690^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26315027525899 + ... + 26315027525914.

Almost surely, 2^{421040440414504} is an apocalyptic number.

It is an amenable number.

421040440414504 is a deficient number, since it is larger than the sum of its proper divisors (368410385362706).

421040440414504 is a wasteful number, since it uses less digits than its factorization.

421040440414504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52630055051819 (or 52630055051815 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 37.

Adding to 421040440414504 its reverse (405414044040124), we get a palindrome (826454484454628).

The spelling of 421040440414504 in words is "four hundred twenty-one trillion, forty billion, four hundred forty million, four hundred fourteen thousand, five hundred four".