422642615 has 4 divisors (see below), whose sum is σ = 507171144. Its totient is φ = 338114088.

The previous prime is 422642609. The next prime is 422642651. The reversal of 422642615 is 516246224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 422642615 - 2⁸ = 422642359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42264257 + ... + 42264266.

It is an arithmetic number, because the mean of its divisors is an integer number (126792786).

Almost surely, 2^422642615 is an apocalyptic number.

422642615 is a deficient number, since it is larger than the sum of its proper divisors (84528529).

422642615 is an equidigital number, since it uses as much as digits as its factorization.

422642615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84528528.

The product of its digits is 23040, while the sum is 32.

The square root of 422642615 is about 20558.2736386108. The cubic root of 422642615 is about 750.4546073502.

Adding to 422642615 its reverse (516246224), we get a palindrome (938888839).

The spelling of 422642615 in words is "four hundred twenty-two million, six hundred forty-two thousand, six hundred fifteen".