422421023 has 2 divisors, whose sum is σ = 422421024. Its totient is φ = 422421022.

The previous prime is 422421011. The next prime is 422421079. The reversal of 422421023 is 320124224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 422421023 - 2⁶ = 422420959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 422420986 and 422421004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422421823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211210511 + 211210512.

It is an arithmetic number, because the mean of its divisors is an integer number (211210512).

Almost surely, 2^422421023 is an apocalyptic number.

422421023 is a deficient number, since it is larger than the sum of its proper divisors (1).

422421023 is an equidigital number, since it uses as much as digits as its factorization.

422421023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 422421023 is about 20552.8835689788. The cubic root of 422421023 is about 750.3234296895.

Adding to 422421023 its reverse (320124224), we get a palindrome (742545247).

The spelling of 422421023 in words is "four hundred twenty-two million, four hundred twenty-one thousand, twenty-three".