422140023 has 12 divisors (see below), whose sum is σ = 616045248. Its totient is φ = 278524800.

The previous prime is 422140013. The next prime is 422140057. The reversal of 422140023 is 320041224.

It is not a de Polignac number, because 422140023 - 2⁴ = 422140007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 422139978 and 422140005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422140003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240903 + ... + 242648.

It is an arithmetic number, because the mean of its divisors is an integer number (51337104).

Almost surely, 2^422140023 is an apocalyptic number.

422140023 is a deficient number, since it is larger than the sum of its proper divisors (193905225).

422140023 is a wasteful number, since it uses less digits than its factorization.

422140023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483654 (or 483651 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 422140023 is about 20546.0464080076. The cubic root of 422140023 is about 750.1570177916.

Adding to 422140023 its reverse (320041224), we get a palindrome (742181247).

It can be divided in two parts, 4221 and 40023, that added together give a palindrome (44244).

The spelling of 422140023 in words is "four hundred twenty-two million, one hundred forty thousand, twenty-three".