What are the properties of nothing?
Even in the gulfs of intergalactic space, there are hundreds or thousands of particles in every cubic meter. But even if you could rent MegaMaid from a Dark Helmet surplus store, and vacuum up those particles, there would still be wavelengths of radiation, stretching across vast distances of space.
There’s the inevitable reach of gravity stretching across the entire Universe. There’s the weak magnetic field from a distant quasar. It’s infinitesimally weak, but it’s not nothing. It’s still something.