422420023 has 4 divisors (see below), whose sum is σ = 422528400. Its totient is φ = 422311648.

The previous prime is 422420021. The next prime is 422420039. The reversal of 422420023 is 320024224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 422420023 - 2¹ = 422420021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422420021) 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 3 ways as a sum of consecutive naturals, for example, 48115 + ... + 56212.

It is an arithmetic number, because the mean of its divisors is an integer number (105632100).

Almost surely, 2^422420023 is an apocalyptic number.

422420023 is a deficient number, since it is larger than the sum of its proper divisors (108377).

422420023 is a wasteful number, since it uses less digits than its factorization.

422420023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108376.

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

The square root of 422420023 is about 20552.8592414778. The cubic root of 422420023 is about 750.3228376072.

Adding to 422420023 its reverse (320024224), we get a palindrome (742444247).

The spelling of 422420023 in words is "four hundred twenty-two million, four hundred twenty thousand, twenty-three".