This graph is the unique $\mathrm{SRG}(162,105,72,60)$. It is the complement of the 2nd subconstituent of the McLaughlin graph.
| Number of vertices: | $162$ |
| Diameter: | $2$ |
| Intersection array: | $\{105,32;1,60\}$ |
| Spectrum: | $105^1 15^{21} (-3)^{140}$ |
| Automorphism group: | $\mathrm{PSU}(4,3):2^2$ |
| Distance-transitive: | Yes |
| Primitive |