422445 has 8 divisors (see below), whose sum is σ = 675936. Its totient is φ = 225296.

The previous prime is 422431. The next prime is 422453. The reversal of 422445 is 544224.

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

It is a cyclic number.

It is not a de Polignac number, because 422445 - 2¹¹ = 420397 is a prime.

It is a d-powerful number, because it can be written as 4⁴ + 2¹⁷ + 4⁷ + 2¹⁷ + 4⁸ + 5⁷ .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14067 + ... + 14096.

It is an arithmetic number, because the mean of its divisors is an integer number (84492).

2⁴²²⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

422445 is a deficient number, since it is larger than the sum of its proper divisors (253491).

422445 is a wasteful number, since it uses less digits than its factorization.

422445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28171.

The product of its digits is 1280, while the sum is 21.

The square root of 422445 is about 649.9576909307. The cubic root of 422445 is about 75.0337625767.

Adding to 422445 its reverse (544224), we get a palindrome (966669).

The spelling of 422445 in words is "four hundred twenty-two thousand, four hundred forty-five".