420422223 has 32 divisors (see below), whose sum is σ = 654103296. Its totient is φ = 237823488.

The previous prime is 420422213. The next prime is 420422237. The reversal of 420422223 is 322224024.

It is not a de Polignac number, because 420422223 - 2¹⁶ = 420356687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420422223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420422213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21136 + ... + 35882.

It is an arithmetic number, because the mean of its divisors is an integer number (20440728).

Almost surely, 2^420422223 is an apocalyptic number.

420422223 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

420422223 is a deficient number, since it is larger than the sum of its proper divisors (233681073).

420422223 is a wasteful number, since it uses less digits than its factorization.

420422223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14823.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 420422223 is about 20504.2001307049. The cubic root of 420422223 is about 749.1381050066.

Adding to 420422223 its reverse (322224024), we get a palindrome (742646247).

The spelling of 420422223 in words is "four hundred twenty million, four hundred twenty-two thousand, two hundred twenty-three".