The Formatted Number module defines numeric types where thousands separator and decimal point are inherited from the Format Number API module.
Numeric types supported: signed or unsigned integers (tiny, small, medium, int), decimal and float.
Additional field formatters
You can easily add additional formatters adding the following lines to your
// Additional formatters for fixed number of decimal places.
$conf['formatted_number_decimal_place_formatter_lengths'] = array(0, 1, 2);
// Additional formatters for fixed number of significant figures.
$conf['formatted_number_significant_figure_formatter_lengths'] = array(1, 2, 3, 4);
Be sure to rebuild your theme registry after changing these options.