How many pages does The Lighthouse - novel have?

There seems to be some confusion. "The Lighthouse" is not a novel, it's a short story by E.T. Waldron. It's only a few pages long, and the exact number might vary depending on the edition.

It's likely you're thinking of the 2019 film "The Lighthouse" by Robert Eggers. It is not based on this short story and has a different plot and characters.

If you're looking for information on the film "The Lighthouse", please let me know and I can help you with that.