8423422543 has 2 divisors, whose sum is σ = 8423422544. Its totient is φ = 8423422542.

The previous prime is 8423422529. The next prime is 8423422639. The reversal of 8423422543 is 3452243248.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8423422543 - 2⁹ = 8423422031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8423722543) 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, 4211711271 + 4211711272.

It is an arithmetic number, because the mean of its divisors is an integer number (4211711272).

Almost surely, 2^8423422543 is an apocalyptic number.

8423422543 is a deficient number, since it is larger than the sum of its proper divisors (1).

8423422543 is an equidigital number, since it uses as much as digits as its factorization.

8423422543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 37.

The square root of 8423422543 is about 91779.2053953400. The cubic root of 8423422543 is about 2034.6803718974.

The spelling of 8423422543 in words is "eight billion, four hundred twenty-three million, four hundred twenty-two thousand, five hundred forty-three".