422745 has 8 divisors (see below), whose sum is σ = 676416. Its totient is φ = 225456.

The previous prime is 422711. The next prime is 422749. The reversal of 422745 is 547224.

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

It is not a de Polignac number, because 422745 - 2¹³ = 414553 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 422745.

It is not an unprimeable number, because it can be changed into a prime (422749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14077 + ... + 14106.

It is an arithmetic number, because the mean of its divisors is an integer number (84552).

2⁴²²⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

422745 is a deficient number, since it is larger than the sum of its proper divisors (253671).

422745 is a wasteful number, since it uses less digits than its factorization.

422745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28191.

The product of its digits is 2240, while the sum is 24.

The square root of 422745 is about 650.1884342250. The cubic root of 422745 is about 75.0515201564.

Adding to 422745 its reverse (547224), we get a palindrome (969969).

The spelling of 422745 in words is "four hundred twenty-two thousand, seven hundred forty-five".