1764

Number
$1764$ (one thousand seven hundred and sixty-four) is:


 * $2^2 \times 3^2 \times 7^2$


 * The $42$nd square number after $1$, $4$, $9$, $16$, $25$, $36$, $\ldots$, $1024$, $1089$, $1156$, $1225$, $1296$, $1369$, $1444$, $1521$, $1600$, $1681$:
 * $1764 = 42 \times 42$