144 = 24 x 32.
1442 = 122, a perfect square. If you reverse the digits, 212 = 441.
144 has a unique representation as a sum of three squares: 144 = 42 + 82 + 82.
144 is a square number. Divide it by 4 and you get 36, which is also square. Does this happen with any other square numbers?
144 is 99 in base 15.
Source: WolframAlpha