"Are all 42 equally powerfull and all knowing ?"
Just another guess, but I'll say no they arn't. Each in charge of a different aspect of the universe. Again, just a wild guess.
If they are not equal, then what happens if they disagree or overlap ?
I think the number you're looking for is 7. Destiny, Death, Dream, Destruction, Desire, Despair, and Delirium.