422320123 has 4 divisors (see below), whose sum is σ = 424911208. Its totient is φ = 419729040.

The previous prime is 422320081. The next prime is 422320159. The reversal of 422320123 is 321023224.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422320123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 422320123.

It is not an unprimeable number, because it can be changed into a prime (422320193) 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, 1295298 + ... + 1295623.

It is an arithmetic number, because the mean of its divisors is an integer number (106227802).

Almost surely, 2^422320123 is an apocalyptic number.

422320123 is a deficient number, since it is larger than the sum of its proper divisors (2591085).

422320123 is a wasteful number, since it uses less digits than its factorization.

422320123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591084.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 422320123 is about 20550.4287789817. The cubic root of 422320123 is about 750.2636838761.

Adding to 422320123 its reverse (321023224), we get a palindrome (743343347).

It can be divided in two parts, 4223201 and 23, that added together give a palindrome (4223224).

The spelling of 422320123 in words is "four hundred twenty-two million, three hundred twenty thousand, one hundred twenty-three".