Music

Travie McCoy's hit song, "Billionaire," describes what the singer would do if he had a billion dollars: adopt lots of children, give away several Mercedes, revitalize New Orleans and fix the economy, among other feats. The song spent 20 weeks on Billboard's Hot 100 chart, peaking at No.4.

Setting aside the fact that a billion dollars wouldn't come close to cleaning up after a natural disaster or getting the economy pumping again, the song sends the message that it takes a billion dollars if you really want to make a big difference.

Housing

A million dollars might not even buy you a house in one of America's 10 most expensive cities for real estate, according to MarketWatch. The most expensive city on the list, Newport Beach, Calif., had an average list price of $2.5 million for a four-bedroom, two-bath home, while the least expensive on the list, Cupertino, Calif., had an average list price of $1.4 million. And some surveys of wealth don't even include home equity in assessing people's net worth.

The annual World Wealth Report defines high-net-worth individuals as "those having investable assets of U.S. $1 million or more, excluding primary residence, collectibles, consumables and consumer durables."

Professional sports

In a Forbes list of the world's most-valulable sports teams, 24 teams worth $1 billion or more. Soccer's Manchester United topped the list at $1.86 billion. The National Football League's Dallas Cowboys came in second, at $1.81 billion.

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Despite the struggling eceonomy, Forbes' most recent list had 22 entries: Joining Man-U and the Cowboys were 15 additional NFL teams, Major League Baseball's New York Yankees (at No. 3), the Ferrari race team (No. 13) and four more soccer teams.

The bottom line

For many people, having a net worth of $1 million or even $100,000 still seems unattainable, yet these days neither figure is likely to impress anyone unless it was attained at a young age. Of course, even then, you'll be competing with the legacies of Bill Gates, Michael Dell and Mark Zuckerberg, all of whom were multimillionaires or billionaires before they turned 30.