The word millionaire was first used by Benjamin Disraeli in his 1826 novel Vivian Grey.
If you stack one million US$1 bills, it would be 110m (361 ft) high and weight exactly 1 ton.
A million dollars' worth of $100 bills weighs only 10 kg (22 lb).
One million dollars' worth of one-cent coins (100 million coins) weigh 246 tons.
TIP is the acronym for "To Insure Promptness."
Money notes are not made from paper, it is made mostly from a special blend of cotton and linen.
In 1932, when a shortage of cash occurred in Tenino, Washington, USA, notes were made out of wood for a brief period. The wood notes came in $1, $5 and $10 values.
The world's largest coins, in size and standard value, were copper plates used in Alaska around 1850. They were about a metre (3 ft) long, half-a-metre (about 2 ft) wide, weighed 40 kg (90 lb), and were worth $2,500.
The first credit card was issued by American Express in 1951.
In 1955 the richest woman in the world was Mrs Hetty Green Wilks, who left an estate of $95 million in a will that was found in a tin box with four pieces of soap.
In 2001 the richest woman was Liliane Bettencourt, the daughter of L'Oreal's founder. She has a net worth of $14 billion (depending on how the stock market did today).
In 2000, Queen Beatrix of the Netherlands is the second wealthiest woman, with $5,2 billion.
Queen Elizabeth II is one of the 10th wealthiest women in the world.
The $ sign was designed in 1788 by Oliver Pollock.
There are more than 7 million millionaires in the world.
80% of millionaires drive second-hand cars.
A third of the world's people live on less than $2 a day, with 1,2 billion people living on less than $1 a day.
The NASDAQ stock exchange was totally disabled in on day in December 1987 when a squirrel burrowed through a telephone line.