420423324023 has 2 divisors, whose sum is σ = 420423324024. Its totient is φ = 420423324022.

The previous prime is 420423324007. The next prime is 420423324031. The reversal of 420423324023 is 320423324024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420423324023 - 2⁴ = 420423324007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420423324043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210211662011 + 210211662012.

It is an arithmetic number, because the mean of its divisors is an integer number (210211662012).

Almost surely, 2^420423324023 is an apocalyptic number.

420423324023 is a deficient number, since it is larger than the sum of its proper divisors (1).

420423324023 is an equidigital number, since it uses as much as digits as its factorization.

420423324023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 420423324023 its reverse (320423324024), we get a palindrome (740846648047).

Subtracting from 420423324023 its reverse (320423324024), we obtain a palindrome (99999999999).

The spelling of 420423324023 in words is "four hundred twenty billion, four hundred twenty-three million, three hundred twenty-four thousand, twenty-three".