422545 has 4 divisors (see below), whose sum is σ = 507060. Its totient is φ = 338032.

The previous prime is 422537. The next prime is 422549. The reversal of 422545 is 545224.

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

It can be written as a sum of positive squares in 2 ways, for example, as 221841 + 200704 = 471^2 + 448^2 .

It is a cyclic number.

It is not a de Polignac number, because 422545 - 2³ = 422537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (422549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42250 + ... + 42259.

It is an arithmetic number, because the mean of its divisors is an integer number (126765).

2⁴²²⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

422545 is a deficient number, since it is larger than the sum of its proper divisors (84515).

422545 is an equidigital number, since it uses as much as digits as its factorization.

422545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84514.

The product of its digits is 1600, while the sum is 22.

The square root of 422545 is about 650.0346144630. The cubic root of 422545 is about 75.0396827038.

Adding to 422545 its reverse (545224), we get a palindrome (967769).

The spelling of 422545 in words is "four hundred twenty-two thousand, five hundred forty-five".