423326143 has 2 divisors, whose sum is σ = 423326144. Its totient is φ = 423326142.

The previous prime is 423326117. The next prime is 423326149. The reversal of 423326143 is 341623324.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423326143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423326149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211663071 + 211663072.

It is an arithmetic number, because the mean of its divisors is an integer number (211663072).

Almost surely, 2^423326143 is an apocalyptic number.

423326143 is a deficient number, since it is larger than the sum of its proper divisors (1).

423326143 is an equidigital number, since it uses as much as digits as its factorization.

423326143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 28.

The square root of 423326143 is about 20574.8910811212. The cubic root of 423326143 is about 750.8589524846.

Adding to 423326143 its reverse (341623324), we get a palindrome (764949467).

The spelling of 423326143 in words is "four hundred twenty-three million, three hundred twenty-six thousand, one hundred forty-three".