It is a happy number.
45342 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 45342.
245342 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 45342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53820).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
45342 is a wasteful number, since it uses less digits than its factorization.
45342 is an evil number, because the sum of its binary digits is even.
The square root of 45342 is about 212.9366102858. The cubic root of 45342 is about 35.6588136941.
Adding to 45342 its reverse (24354), we get a palindrome (69696).
The spelling of 45342 in words is "forty-five thousand, three hundred forty-two".