421230400443 has 6 divisors (see below), whose sum is σ = 608443911764. Its totient is φ = 280820266956.

The previous prime is 421230400421. The next prime is 421230400447. The reversal of 421230400443 is 344004032124.

It is a happy number.

421230400443 is a `hidden beast` number, since 4 + 21 + 230 + 400 + 4 + 4 + 3 = 666.

421230400443 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 421230400443 - 2⁶ = 421230400379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421230400447) 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, 23401688905 + ... + 23401688922.

Almost surely, 2^421230400443 is an apocalyptic number.

421230400443 is a deficient number, since it is larger than the sum of its proper divisors (187213511321).

421230400443 is a wasteful number, since it uses less digits than its factorization.

421230400443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46803377833 (or 46803377830 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 421230400443 its reverse (344004032124), we get a palindrome (765234432567).

The spelling of 421230400443 in words is "four hundred twenty-one billion, two hundred thirty million, four hundred thousand, four hundred forty-three".