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.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh6_XjhrpWdECt4MlPh-jm3q-vc-FH3DlEDtmK2WIHdPerxhyphenhyphenUbPK2_rqzIvUOhdlaI03BN3acCq2HjNuq2VqyWAz5T1eOQ50J_AET0oZqyDtGxmn_3BGNkTDKessCnqXMbiZz_Io7tD5c/s200/n0144.jpg)
Source: WolframAlpha