422456143 has 2 divisors, whose sum is σ = 422456144. Its totient is φ = 422456142.

The previous prime is 422456117. The next prime is 422456149. The reversal of 422456143 is 341654224.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422456143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422456149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211228071 + 211228072.

It is an arithmetic number, because the mean of its divisors is an integer number (211228072).

Almost surely, 2^422456143 is an apocalyptic number.

422456143 is a deficient number, since it is larger than the sum of its proper divisors (1).

422456143 is an equidigital number, since it uses as much as digits as its factorization.

422456143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 31.

The square root of 422456143 is about 20553.7379325513. The cubic root of 422456143 is about 750.3442230269.

The spelling of 422456143 in words is "four hundred twenty-two million, four hundred fifty-six thousand, one hundred forty-three".