422642655 has 12 divisors (see below), whose sum is σ = 732580680. Its totient is φ = 225409392.

The previous prime is 422642651. The next prime is 422642663. The reversal of 422642655 is 556246224.

422642655 is a `hidden beast` number, since 4 + 2 + 2 + 642 + 6 + 5 + 5 = 666.

It is not a de Polignac number, because 422642655 - 2² = 422642651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422642651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4695985 + ... + 4696074.

It is an arithmetic number, because the mean of its divisors is an integer number (61048390).

Almost surely, 2^422642655 is an apocalyptic number.

422642655 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

422642655 is a deficient number, since it is larger than the sum of its proper divisors (309938025).

422642655 is a wasteful number, since it uses less digits than its factorization.

422642655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9392070 (or 9392067 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 422642655 is about 20558.2746114551. The cubic root of 422642655 is about 750.4546310252.

Adding to 422642655 its reverse (556246224), we get a palindrome (978888879).

The spelling of 422642655 in words is "four hundred twenty-two million, six hundred forty-two thousand, six hundred fifty-five".