423122243 has 2 divisors, whose sum is σ = 423122244. Its totient is φ = 423122242.

The previous prime is 423122239. The next prime is 423122251. The reversal of 423122243 is 342221324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423122243 - 2² = 423122239 is a prime.

It is not a weakly prime, because it can be changed into another prime (423122233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211561121 + 211561122.

It is an arithmetic number, because the mean of its divisors is an integer number (211561122).

Almost surely, 2^423122243 is an apocalyptic number.

423122243 is a deficient number, since it is larger than the sum of its proper divisors (1).

423122243 is an equidigital number, since it uses as much as digits as its factorization.

423122243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 23.

The square root of 423122243 is about 20569.9354155525. The cubic root of 423122243 is about 750.7383797848.

Adding to 423122243 its reverse (342221324), we get a palindrome (765343567).

The spelling of 423122243 in words is "four hundred twenty-three million, one hundred twenty-two thousand, two hundred forty-three".