Number of Pages isn't very useful
Maybe this can help you out. It's what I was told by my agent and editor. First, talking specifically about historical fiction. For a first time author, they're not going to do a book more than 175,000 words (using Microsoft Word's count - and please don't tell me that it's not accurate; publishers know how to convert it into whatever system they're using).
Historical fiction seems to run in the range of 150,000 to 175,000 words, give or take. Readers of historical fiction tend to prefer larger books, and they're not going to pay for anything much smaller, especially if they don't know the author.
That said, the page length is going to vary based on the physical size of the book. Paperback versus hardcover versus pocketsized, etc. I'm going to stay with hardcover, since that's what I've been involved in.
The reasoning for that length is pretty boring. It involves shelf space, how many books can be packed into a carton for shipping, and other grubby financial considerations. So a larger book for a first time author is a lot of risk for a publisher to take, and they're not in the big-risk business. Also, they have to charge more, which is more risk, since the public doesn't know the author, so why should they pay $24.95 for a new hardcover? Or $27.95, etc.
My historical went to the publisher at 184,000 words, and with her changes and suggestions, actually increased to 193,000. (They wanted more meat in some characters for the hoped-for movie).
So I think if you're submitting, try to write the BEST novel you can, and hope that it finishes in the 150,000 to 175,000 range. That won't bother anyone, either an agent or editor. Once they get it, they'll TELL YOU what to add or cut, and you pretty much better listen to what they say.
Keep writing,
eskkar