422631457 has 2 divisors, whose sum is σ = 422631458. Its totient is φ = 422631456.

The previous prime is 422631449. The next prime is 422631491. The reversal of 422631457 is 754136224.

It is an a-pointer prime, because the next prime (422631491) can be obtained adding 422631457 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 357361216 + 65270241 = 18904^2 + 8079^2 .

It is a cyclic number.

It is not a de Polignac number, because 422631457 - 2³ = 422631449 is a prime.

It is not a weakly prime, because it can be changed into another prime (422631757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211315728 + 211315729.

It is an arithmetic number, because the mean of its divisors is an integer number (211315729).

Almost surely, 2^422631457 is an apocalyptic number.

It is an amenable number.

422631457 is a deficient number, since it is larger than the sum of its proper divisors (1).

422631457 is an equidigital number, since it uses as much as digits as its factorization.

422631457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 34.

The square root of 422631457 is about 20558.0022618931. The cubic root of 422631457 is about 750.4480031524.

The spelling of 422631457 in words is "four hundred twenty-two million, six hundred thirty-one thousand, four hundred fifty-seven".