422646642 has 24 divisors (see below), whose sum is σ = 998983440. Its totient is φ = 128074680.

The previous prime is 422646641. The next prime is 422646649. The reversal of 422646642 is 246646224.

422646642 is a `hidden beast` number, since 4 + 2 + 2 + 6 + 4 + 6 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 422646597 and 422646606.

It is not an unprimeable number, because it can be changed into a prime (422646641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1067092 + ... + 1067487.

It is an arithmetic number, because the mean of its divisors is an integer number (41624310).

Almost surely, 2^422646642 is an apocalyptic number.

422646642 is an abundant number, since it is smaller than the sum of its proper divisors (576336798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422646642 is a wasteful number, since it uses less digits than its factorization.

422646642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134598 (or 2134595 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The square root of 422646642 is about 20558.3715794807. The cubic root of 422646642 is about 750.4569908226.

The spelling of 422646642 in words is "four hundred twenty-two million, six hundred forty-six thousand, six hundred forty-two".