422443 has 8 divisors (see below), whose sum is σ = 499680. Its totient is φ = 349440.

The previous prime is 422431. The next prime is 422453. The reversal of 422443 is 344224.

422443 = 22² + 23² + ... + 108².

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

It is not a de Polignac number, because 422443 - 2¹⁷ = 291371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 422443.

It is not an unprimeable number, because it can be changed into a prime (422453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 838 + ... + 1243.

It is an arithmetic number, because the mean of its divisors is an integer number (62460).

2⁴²²⁴⁴³ is an apocalyptic number.

422443 is a deficient number, since it is larger than the sum of its proper divisors (77237).

422443 is a wasteful number, since it uses less digits than its factorization.

422443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117.

The product of its digits is 768, while the sum is 19.

The square root of 422443 is about 649.9561523672. The cubic root of 422443 is about 75.0336441646.

Adding to 422443 its reverse (344224), we get a palindrome (766667).

It can be divided in two parts, 42 and 2443, that added together give a triangular number (2485 = T₇₀).

The spelling of 422443 in words is "four hundred twenty-two thousand, four hundred forty-three", and thus it is an iban number.