420422023 has 16 divisors (see below), whose sum is σ = 497871360. Its totient is φ = 347551776.

The previous prime is 420421997. The next prime is 420422033. The reversal of 420422023 is 320224024.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420422023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420422033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12286 + ... + 31492.

It is an arithmetic number, because the mean of its divisors is an integer number (31116960).

Almost surely, 2^420422023 is an apocalyptic number.

420422023 is a deficient number, since it is larger than the sum of its proper divisors (77449337).

420422023 is a wasteful number, since it uses less digits than its factorization.

420422023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19326.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 420422023 is about 20504.1952536548. The cubic root of 420422023 is about 749.1379862151.

Adding to 420422023 its reverse (320224024), we get a palindrome (740646047).

The spelling of 420422023 in words is "four hundred twenty million, four hundred twenty-two thousand, twenty-three".