It's funny what very rich people want.
I can't imagine wanting 42 bathrooms. That's 42 times as many times you need a plumber. And 42 times as many people required to clean them, meaning your house is like a hotel filled with maids. What a nuisance.
I get three or four. But 42?
It's like those gigantic yachts, where they might as well be a floating office block. Why?