422040423 has 32 divisors (see below), whose sum is σ = 652087296. Its totient is φ = 237823488.

The previous prime is 422040413. The next prime is 422040427. The reversal of 422040423 is 324040224.

It is not a de Polignac number, because 422040423 - 2⁵ = 422040391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 422040423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422040427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 694986 + ... + 695592.

It is an arithmetic number, because the mean of its divisors is an integer number (20377728).

Almost surely, 2^422040423 is an apocalyptic number.

422040423 is a deficient number, since it is larger than the sum of its proper divisors (230046873).

422040423 is a wasteful number, since it uses less digits than its factorization.

422040423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023.

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

The square root of 422040423 is about 20543.6224410399. The cubic root of 422040423 is about 750.0980156345.

Adding to 422040423 its reverse (324040224), we get a palindrome (746080647).

The spelling of 422040423 in words is "four hundred twenty-two million, forty thousand, four hundred twenty-three".