42223 has 2 divisors, whose sum is σ = 42224.
Its totient is φ = 42222.
The previous prime is 42221. The next prime is 42227. The reversal of 42223 is 32224.
Adding to 42223 its reverse (32224), we get a palindrome (74447).
Subtracting from 42223 its reverse (32224), we obtain a palindrome (9999).
It can be divided in two parts, 4222 and 3, that added together give a square (4225 = 652).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 42223 - 21 = 42221 is a prime.
Together with 42221, it forms a pair of twin primes.
It is a plaindrome in base 8 and base 14.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (42221) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21111 + 21112.
It is an arithmetic number, because the mean of its divisors is an integer number (21112).
242223 is an apocalyptic number.
42223 is a deficient number, since it is larger than the sum of its proper divisors (1).
42223 is an equidigital number, since it uses as much as digits as its factorization.
42223 is an evil number, because the sum of its binary digits is even.
The product of its digits is 96, while the sum is 13.
The square root of 42223 is about 205.4823593402.
The cubic root of 42223 is about 34.8216780421.
The spelling of 42223 in words is "forty-two thousand, two hundred twenty-three", and thus it is an iban number.