421341431231421 has 48 divisors (see below), whose sum is σ = 632990786416560. Its totient is φ = 269744213975040.

The previous prime is 421341431231387. The next prime is 421341431231431. The reversal of 421341431231421 is 124132134143124.

421341431231421 is a `hidden beast` number, since 4 + 2 + 1 + 3 + 4 + 1 + 4 + 312 + 314 + 21 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 170362169825796 + 250979261405625 = 13052286^2 + 15842325^2 .

It is not a de Polignac number, because 421341431231421 - 2¹⁰ = 421341431230397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421341431231431) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 230654911 + ... + 232474451.

It is an arithmetic number, because the mean of its divisors is an integer number (13187308050345).

Almost surely, 2^{421341431231421} is an apocalyptic number.

It is an amenable number.

421341431231421 is a deficient number, since it is larger than the sum of its proper divisors (211649355185139).

421341431231421 is a wasteful number, since it uses less digits than its factorization.

421341431231421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824366 (or 1824363 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

Adding to 421341431231421 its reverse (124132134143124), we get a palindrome (545473565374545).

The spelling of 421341431231421 in words is "four hundred twenty-one trillion, three hundred forty-one billion, four hundred thirty-one million, two hundred thirty-one thousand, four hundred twenty-one".