Adding to 21294 its sum of digits (18), we get a palindrome (21312).
21294 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.
It is an alternating number because its digits alternate between even and odd.
It is a Curzon number.
It is a nialpdrome in base 13.
It is a zygodrome in base 13.
It is a congruent number.
It is an unprimeable number.
221294 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 21294, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28548).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21294 is a wasteful number, since it uses less digits than its factorization.
21294 is an evil number, because the sum of its binary digits is even.
The square root of 21294 is about 145.9246380842. The cubic root of 21294 is about 27.7173953563.
The spelling of 21294 in words is "twenty-one thousand, two hundred ninety-four".