421002420223 has 192 divisors, whose sum is σ = 599107829760. Its totient is φ = 291301920000.

The previous prime is 421002420217. The next prime is 421002420247. The reversal of 421002420223 is 322024200124.

It is not a de Polignac number, because 421002420223 - 2⁹ = 421002419711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421002420194 and 421002420203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421002420253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2204201058 + ... + 2204201248.

It is an arithmetic number, because the mean of its divisors is an integer number (3120353280).

Almost surely, 2^421002420223 is an apocalyptic number.

421002420223 is a deficient number, since it is larger than the sum of its proper divisors (178105409537).

421002420223 is a wasteful number, since it uses less digits than its factorization.

421002420223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 421002420223 its reverse (322024200124), we get a palindrome (743026620347).

The spelling of 421002420223 in words is "four hundred twenty-one billion, two million, four hundred twenty thousand, two hundred twenty-three".