Groups of order 42
There are 6 groups of order 42, namely the abelian group Z42, and the non-abelian groups D21, S3×Z7, Z2×Z7⋊Z3, D7×Z3, F7
There are 6 groups of order 42, namely the abelian group Z42, and the non-abelian groups D21, S3×Z7, Z2×Z7⋊Z3, D7×Z3, F7