421210243023 has 24 divisors (see below), whose sum is σ = 595423526544. Its totient is φ = 263945326080.

The previous prime is 421210243009. The next prime is 421210243037. The reversal of 421210243023 is 320342012124.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (421210243009) and next prime (421210243037).

It is not a de Polignac number, because 421210243023 - 2⁴ = 421210243007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421210242984 and 421210243002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421210243093) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34369965 + ... + 34382217.

It is an arithmetic number, because the mean of its divisors is an integer number (24809313606).

Almost surely, 2^421210243023 is an apocalyptic number.

421210243023 is a deficient number, since it is larger than the sum of its proper divisors (174213283521).

421210243023 is an equidigital number, since it uses as much as digits as its factorization.

421210243023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13915 (or 13094 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 421210243023 its reverse (320342012124), we get a palindrome (741552255147).

The spelling of 421210243023 in words is "four hundred twenty-one billion, two hundred ten million, two hundred forty-three thousand, twenty-three".