You could use \label on the page in question and \pageref where you want to later reference it.
MWE:
\documentclass{article}
\usepackage{lipsum}
\pagestyle{empty}
\begin{document}
\lipsum[1-5]
\label{I want to remember this first page}
\lipsum[6-20]
I've remembered the page \pageref{I want to remember this first page}
\end{document}
Do note that you must compile your document twice to get the page references correct.
Here's an example which let's you put material in the header and footer:
\documentclass{article}
\usepackage{fancyhdr}\pagestyle{fancy}
\renewcommand{\headrulewidth}{0.4pt}\renewcommand{\footrulewidth}{0.4pt}
\usepackage{lipsum}
\begin{document}
\lipsum[1-5]
\label{I want to remember this first page}
\lipsum[6-20]
I've remembered the question \pageref{I want to remember this first page}
Check out the bottom of the page:
\cfoot{My reference to the first page\pageref{I want to remember this first page}}
\end{document}
I've called the package fancyhdr to accomplish this, but make sure you don't call \pagestyle{empty} as I did in the first example or you won't see anything.
\pageref{foo}as a number? solve your question? It usesrefcountto store the page reference in a counter (variable). Give some feedback. – Werner Dec 12 '12 at 23:45