422742673 has 2 divisors, whose sum is σ = 422742674. Its totient is φ = 422742672.

The previous prime is 422742659. The next prime is 422742701. The reversal of 422742673 is 376247224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 410791824 + 11950849 = 20268^2 + 3457^2 .

It is a cyclic number.

It is not a de Polignac number, because 422742673 - 2¹⁷ = 422611601 is a prime.

It is a super-2 number, since 2×422742673² = 357422735150369858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (422742623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211371336 + 211371337.

It is an arithmetic number, because the mean of its divisors is an integer number (211371337).

Almost surely, 2^422742673 is an apocalyptic number.

It is an amenable number.

422742673 is a deficient number, since it is larger than the sum of its proper divisors (1).

422742673 is an equidigital number, since it uses as much as digits as its factorization.

422742673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 37.

The square root of 422742673 is about 20560.7070160537. The cubic root of 422742673 is about 750.5138244914.

Adding to 422742673 its reverse (376247224), we get a palindrome (798989897).

The spelling of 422742673 in words is "four hundred twenty-two million, seven hundred forty-two thousand, six hundred seventy-three".