422445143 has 2 divisors, whose sum is σ = 422445144. Its totient is φ = 422445142.

The previous prime is 422445119. The next prime is 422445151. The reversal of 422445143 is 341544224.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422445143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422445103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211222571 + 211222572.

It is an arithmetic number, because the mean of its divisors is an integer number (211222572).

Almost surely, 2^422445143 is an apocalyptic number.

422445143 is a deficient number, since it is larger than the sum of its proper divisors (1).

422445143 is an equidigital number, since it uses as much as digits as its factorization.

422445143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15360, while the sum is 29.

The square root of 422445143 is about 20553.4703395801. The cubic root of 422445143 is about 750.3377104312.

Adding to 422445143 its reverse (341544224), we get a palindrome (763989367).

The spelling of 422445143 in words is "four hundred twenty-two million, four hundred forty-five thousand, one hundred forty-three".