420500223 has 72 divisors (see below), whose sum is σ = 736195824. Its totient is φ = 229132800.

The previous prime is 420500207. The next prime is 420500231. The reversal of 420500223 is 322005024.

It is not a de Polignac number, because 420500223 - 2⁴ = 420500207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420500196 and 420500205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420500323) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 685665 + ... + 686277.

It is an arithmetic number, because the mean of its divisors is an integer number (10224942).

Almost surely, 2^420500223 is an apocalyptic number.

420500223 is a deficient number, since it is larger than the sum of its proper divisors (315695601).

420500223 is a wasteful number, since it uses less digits than its factorization.

420500223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 420500223 is about 20506.1020918165. The cubic root of 420500223 is about 749.1844307839.

Adding to 420500223 its reverse (322005024), we get a palindrome (742505247).

The spelling of 420500223 in words is "four hundred twenty million, five hundred thousand, two hundred twenty-three".