Order 144.
81 conjugacy classes of subgroups.
| subgroup | G/H | |
|---|---|---|
| center | C22 | C2×D9 |
| commutator, cosocle | C2×C9 | C23 |
| Frattini | C2×C3 | C22×D3 |
| Fitting | C23×C9 | C2 |
| socle | C22×C3 | C2×D3 |
| hypercenter | C23 | D9 |
| hypocenter | C9 | C2×D4 |
| LCS | G ▷ C2×C9 ▷ C9 | |
| UCS | C1 ◁ C22 ◁ C23 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 1. C23×C9 | C2 | semidirect |
| 2. C22×D9 | C2 | semidirect |
| 3. #611 | C2 | direct (N × H) |
| 4. C2×Dic9 | C2 | semidirect |
| 8. C22×C9 | C22 | semidirect |
| 10. C2×D9 | C22 | semidirect |
| 11. Dic9 | C22 | semidirect |
| 17. C2×C9 | D4 | semidirect |
| 27. C9 | C2×D4 | semidirect |
| 29. C23 | D9 | semidirect |
| 40. C22 | C2×D9 | semidirect |
| 45. C2 | #611 | direct (N × H) |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C23×C9 | 2 |
| C22×D9 | 2 |
| #611 | 2 |
| C2×Dic9 | 2 |
| C2×#67 | 3 |