213342 is nontrivially palindromic in base 5.
213342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a congruent number.
213342 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2213342 is an apocalyptic number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
213342 is a wasteful number, since it uses less digits than its factorization.
213342 is an odious number, because the sum of its binary digits is odd.
The square root of 213342 is about 461.8895971983. The cubic root of 213342 is about 59.7528724190.
Adding to 213342 its reverse (243312), we get a palindrome (456654).
The spelling of 213342 in words is "two hundred thirteen thousand, three hundred forty-two".