422340123 has 4 divisors (see below), whose sum is σ = 563120168. Its totient is φ = 281560080.

The previous prime is 422340119. The next prime is 422340131. The reversal of 422340123 is 321043224.

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

It is not a de Polignac number, because 422340123 - 2² = 422340119 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 422340123.

It is not an unprimeable number, because it can be changed into a prime (422340103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70390018 + ... + 70390023.

It is an arithmetic number, because the mean of its divisors is an integer number (140780042).

Almost surely, 2^422340123 is an apocalyptic number.

422340123 is a deficient number, since it is larger than the sum of its proper divisors (140780045).

422340123 is a wasteful number, since it uses less digits than its factorization.

422340123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140780044.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 422340123 is about 20550.9153810724. The cubic root of 422340123 is about 750.2755272117.

Adding to 422340123 its reverse (321043224), we get a palindrome (743383347).

The spelling of 422340123 in words is "four hundred twenty-two million, three hundred forty thousand, one hundred twenty-three".