Based on hearing that it was like "Hitchhiker's Guide" combined with "Project Hail Mary", I started "We Are Legion (We Are Bob)" by Dennis Taylor, first of the "Bobiverse" series. It's good so far, about 100 pages in. It reminds me of some other science fiction books I've enjoyed (mostly "World Out of Time", early Larry Niven) and as promised, it's pretty funny.