42245 is nontrivially palindromic in base 6.
It is a d-powerful number, because it can be written as 44 + 213 + 215 + 45 + 5 .
It is a Duffinian number.
It is a plaindrome in base 14.
It is a zygodrome in base 4.
It is a congruent number.
It is an unprimeable number.
242245 is an apocalyptic number.
42245 is the 119-th octagonal number.
It is an amenable number.
42245 is a wasteful number, since it uses less digits than its factorization.
42245 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 100.
The square root of 42245 is about 205.5358849447. The cubic root of 42245 is about 34.8277248563.
42245 divided by its sum of digits (17) gives a triangular number (2485 = T70).
Adding to 42245 its reverse (54224), we get a palindrome (96469).
The spelling of 42245 in words is "forty-two thousand, two hundred forty-five".