Let \(A = \{1, 2, 3, 4, ..., 42\}\) and \(R\) be the relation defined as "is square of a number" on \(A\). Write \(R\) as a subset of \(A \times A\). Also, compute the domain and range of \(R\). 
 
Domain \(=\)
 
Range \(=\)