0

is the integer between and.

Math features

 * 0 is an even number.
 * 0 is the smallest palindromic number.
 * 0 may be a Mersenne number, since 20 - 1 = 0.
 * 0 has infinite factors, or 0 factors, depending on the situation.
 * Euler's formula: $$e^{i\pi} + 1 = 0$$
 * 0 appears last in &pi;, appearing at the 32nd digit.