422138663 has 2 divisors, whose sum is σ = 422138664. Its totient is φ = 422138662.

The previous prime is 422138657. The next prime is 422138677. The reversal of 422138663 is 366831224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 422138663 - 2¹² = 422134567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422138653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211069331 + 211069332.

It is an arithmetic number, because the mean of its divisors is an integer number (211069332).

Almost surely, 2^422138663 is an apocalyptic number.

422138663 is a deficient number, since it is larger than the sum of its proper divisors (1).

422138663 is an equidigital number, since it uses as much as digits as its factorization.

422138663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 35.

The square root of 422138663 is about 20546.0133115892. The cubic root of 422138663 is about 750.1562122021.

Adding to 422138663 its reverse (366831224), we get a palindrome (788969887).

The spelling of 422138663 in words is "four hundred twenty-two million, one hundred thirty-eight thousand, six hundred sixty-three".