It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
1245 is a lucky number.
It is a plaindrome in base 8, base 10 and base 16.
It is a nialpdrome in base 6 and base 11.
It is a self number, because there is not a number n which added to its sum of digits gives 1245.
It is a congruent number.
21245 is an apocalyptic number.
1245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
1245 is an equidigital number, since it uses as much as digits as its factorization.
1245 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 91.
The square root of 1245 is about 35.2845575288. The cubic root of 1245 is about 10.7577913590.
Adding to 1245 its reverse (5421), we get a palindrome (6666).
The spelling of 1245 in words is "one thousand, two hundred forty-five".