The complement of this graph is a rank-3 $\mathrm{SRG}(136,60,24,28)$.
| Number of vertices: | $136$ |
| Diameter: | $2$ |
| Intersection array: | $\{75,32;1,40\}$ |
| Spectrum: | $75^1 7^{50} (-5)^{85}$ |
| Automorphism group: | $\mathrm{O}(5,4):2 \cong \mathrm{PSp}(4,4).2$ |
| Distance-transitive: | Yes |
| Primitive |