* Font size and style: A larger font size takes up more space on a page, resulting in fewer words per page and therefore more pages overall.
* Page margins: Wider margins reduce the space available for text, leading to more pages.
* Line spacing: Double-spaced text will require more pages than single-spaced text.
* Number of columns: Two-column layouts can fit more words per page than single-column layouts.
* Illustrations and other elements: Images, diagrams, and other elements take up space and can affect the overall page count.
General Estimation:
As a rough estimate, assuming a standard book format with a 12-point font, double-spaced, and standard margins, a million-word book would likely be around 2,500-3,000 pages.
However, this is a very rough estimate. The actual page count could vary significantly depending on the factors listed above.