List of numbers - Integers100000 1000000 10000000 Cardinal One million Ordinal One millionth Factorization 26 · 56 Roman numeral mathrm Unicode representationof Roman numeral Binary 11110100001001000000 Hexadecimal F4240 One million (1,000,000), or one thousand thousand, is the natural number following 999,999 and preceding 1,000,001. In scientific notation, it's written as 106. Physical quantities can also be expressed using the SI prefix mega, when dealing with SI uni… (More on Million)