422821670 has 8 divisors (see below), whose sum is σ = 761079024. Its totient is φ = 169128664.

The previous prime is 422821669. The next prime is 422821697. The reversal of 422821670 is 76128224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21141074 + ... + 21141093.

It is an arithmetic number, because the mean of its divisors is an integer number (95134878).

Almost surely, 2^422821670 is an apocalyptic number.

422821670 is a deficient number, since it is larger than the sum of its proper divisors (338257354).

422821670 is a wasteful number, since it uses less digits than its factorization.

422821670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42282174.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 422821670 is about 20562.6279935226. The cubic root of 422821670 is about 750.5605705395.

Adding to 422821670 its reverse (76128224), we get a palindrome (498949894).

The spelling of 422821670 in words is "four hundred twenty-two million, eight hundred twenty-one thousand, six hundred seventy".