420373223423 has 4 divisors (see below), whose sum is σ = 424535334648. Its totient is φ = 416211112200.

The previous prime is 420373223419. The next prime is 420373223447. The reversal of 420373223423 is 324322373024.

It is a happy number.

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 420373223423 - 2² = 420373223419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420373223483) 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, 2081055461 + ... + 2081055662.

It is an arithmetic number, because the mean of its divisors is an integer number (106133833662).

Almost surely, 2^420373223423 is an apocalyptic number.

420373223423 is a deficient number, since it is larger than the sum of its proper divisors (4162111225).

420373223423 is a wasteful number, since it uses less digits than its factorization.

420373223423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4162111224.

The product of its (nonzero) digits is 145152, while the sum is 35.

Adding to 420373223423 its reverse (324322373024), we get a palindrome (744695596447).

The spelling of 420373223423 in words is "four hundred twenty billion, three hundred seventy-three million, two hundred twenty-three thousand, four hundred twenty-three".