420312421223 has 4 divisors (see below), whose sum is σ = 420966095928. Its totient is φ = 419658746520.

The previous prime is 420312421189. The next prime is 420312421259. The reversal of 420312421223 is 322124213024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420312421223 - 2¹⁴ = 420312404839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420312421192 and 420312421201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420312421283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326836388 + ... + 326837673.

It is an arithmetic number, because the mean of its divisors is an integer number (105241523982).

Almost surely, 2^420312421223 is an apocalyptic number.

420312421223 is a deficient number, since it is larger than the sum of its proper divisors (653674705).

420312421223 is an equidigital number, since it uses as much as digits as its factorization.

420312421223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653674704.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 420312421223 its reverse (322124213024), we get a palindrome (742436634247).

The spelling of 420312421223 in words is "four hundred twenty billion, three hundred twelve million, four hundred twenty-one thousand, two hundred twenty-three".