422720590 has 8 divisors (see below), whose sum is σ = 760897080. Its totient is φ = 169088232.

The previous prime is 422720561. The next prime is 422720603. The reversal of 422720590 is 95027224.

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21136020 + ... + 21136039.

It is an arithmetic number, because the mean of its divisors is an integer number (95112135).

Almost surely, 2^422720590 is an apocalyptic number.

422720590 is a deficient number, since it is larger than the sum of its proper divisors (338176490).

422720590 is a wasteful number, since it uses less digits than its factorization.

422720590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42272066.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 422720590 is about 20560.1699895696. The cubic root of 422720590 is about 750.5007559539.

The spelling of 422720590 in words is "four hundred twenty-two million, seven hundred twenty thousand, five hundred ninety".