422723 has 6 divisors (see below), whose sum is σ = 491796. Its totient is φ = 362292.

The previous prime is 422711. The next prime is 422749. The reversal of 422723 is 327224.

It is a happy number.

It is not a de Polignac number, because 422723 - 2⁴ = 422707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 422695 and 422704.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 422723.

It is not an unprimeable number, because it can be changed into a prime (422753) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4265 + ... + 4362.

It is an arithmetic number, because the mean of its divisors is an integer number (81966).

2⁴²²⁷²³ is an apocalyptic number.

422723 is a deficient number, since it is larger than the sum of its proper divisors (69073).

422723 is an equidigital number, since it uses as much as digits as its factorization.

422723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8641 (or 8634 counting only the distinct ones).

The product of its digits is 672, while the sum is 20.

The square root of 422723 is about 650.1715158326. The cubic root of 422723 is about 75.0502182194.

Adding to 422723 its reverse (327224), we get a palindrome (749947).

The spelling of 422723 in words is "four hundred twenty-two thousand, seven hundred twenty-three", and thus it is an iban number.