13442 has 16 divisors (see below), whose sum is σ = 24192.
Its totient is φ = 5520.
The previous prime is 13441. The next prime is 13451. The reversal of 13442 is 24431.
Adding to 13442 its sum of digits (14), we get a square (13456 = 1162).
Adding to 13442 its reverse (24431), we get a palindrome (37873).
It can be divided in two parts, 1 and 3442, that added together give a palindrome (3443).
It is a nialpdrome in base 11.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13441) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263 + ... + 309.
It is an arithmetic number, because the mean of its divisors is an integer number (1512).
213442 is an apocalyptic number.
13442 is a deficient number, since it is larger than the sum of its proper divisors (10750).
13442 is a wasteful number, since it uses less digits than its factorization.
13442 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 73.
The product of its digits is 96, while the sum is 14.
The square root of 13442 is about 115.9396394681.
The cubic root of 13442 is about 23.7768671022.
The spelling of 13442 in words is "thirteen thousand, four hundred forty-two".