22342 has 4 divisors (see below), whose sum is σ = 33516.
Its totient is φ = 11170.
The previous prime is 22307. The next prime is 22343. The reversal of 22342 is 24322.
Adding to 22342 its reverse (24322), we get a palindrome (46664).
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24322 = 2 ⋅12161.
It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is an Ulam number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (22343) by changing a digit.
22342 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5584 + ... + 5587.
It is an arithmetic number, because the mean of its divisors is an integer number (8379).
222342 is an apocalyptic number.
22342 is a deficient number, since it is larger than the sum of its proper divisors (11174).
22342 is a wasteful number, since it uses less digits than its factorization.
22342 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11173.
The product of its digits is 96, while the sum is 13.
The square root of 22342 is about 149.4724054801.
The cubic root of 22342 is about 28.1648439390.
The spelling of 22342 in words is "twenty-two thousand, three hundred forty-two", and thus it is an iban number.