Facebook platform supports more than 42 million pages and 9 million apps

There are now more than 42 million Facebook pages and 9 million apps and websites integrated with Facebook, according to a recent amendment to the social network’s filing for an initial public offering.

The number of pages on Facebook with 10 or more Likes has increased by 5 million since Dec. 31, 2011, and the number of apps and websites that integrate Facebook are up by 2 million since that date. These new totals show that Facebook’s platform continues to grow in ways beyond new users. It also shows just how much is competing for users’ attention these days.

Facebook did not provide a category breakdown of the 42 million pages on Facebook. However, in a letter to prospective investors, Facebook CEO Mark Zuckerberg shared that more than 4 million businesses have pages on the site. Other pages on the social network — including many of the most popular ones — are pages for popular figures, movies and sports teams. A large proportion of pages are also likely to be fan-generated community pages. Unclaimed locations also account for some of these pages, although Facebook has been working to eliminate duplicates.

The number of apps and websites connected to Facebook is likely to quickly grow past 9 million. With Open Graph integration proving to be a large source of traffic for third-party apps and websites, we can expect many more blogs and media sites, as well as mobile games and other apps to implement aspects of the platform

Along with stats about pages and apps, Facebook provided other updated figures for photo uploads, interactions and friend connections in its filing this week. Between Jan. 1 and March 31, there were more than 300 million photos uploaded to the site each day — up from 250 million per day in Q4 2011. Users also generated an average 3.2 billion Likes and comments each day in the first quarter of 2012 — up from 2.7 billion per day in Q4 2011. And Facebook now has more than 125 billion friend connections between its 901 million monthly active users.