420223423 has 4 divisors (see below), whose sum is σ = 421981920. Its totient is φ = 418464928.

The previous prime is 420223421. The next prime is 420223481. The reversal of 420223423 is 324322024.

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 420223423 - 2¹ = 420223421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420223394 and 420223403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420223421) 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, 878890 + ... + 879367.

It is an arithmetic number, because the mean of its divisors is an integer number (105495480).

Almost surely, 2^420223423 is an apocalyptic number.

420223423 is a deficient number, since it is larger than the sum of its proper divisors (1758497).

420223423 is a wasteful number, since it uses less digits than its factorization.

420223423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758496.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 420223423 is about 20499.3517702390. The cubic root of 420223423 is about 749.0200077483.

Adding to 420223423 its reverse (324322024), we get a palindrome (744545447).

The spelling of 420223423 in words is "four hundred twenty million, two hundred twenty-three thousand, four hundred twenty-three".