NEW YORK – One Direction’s “Take Me Home” is the taking the boys to the top of the charts – and to new heights.

The group’s sophomore album has sold 540,000 in its first week, according to Nielsen SoundScan. It’s the year’s third-highest debut behind Taylor Swift’s “Red,” which sold 1.2 million units its first week this month, and Mumford & Sons’ “Babel,” which sold more than 600,000 albums in September in its debut week.

“We just want to say a massive thanks to all the fans who have supported us,” band member Harry Styles, 18, said in an interview Tuesday from London. “We can send tweets and thank them, but 140 characters is never going be enough to say how much it means.”

The album also debuted at No. 1 in the United Kingdom this week and is No. 1 in more than 30 countries, Columbia Records said Wednesday. The fivesome’s debut, “Up All Night,” came in at No. 2 in the United Kingdom last year; it was just released in March in America, where it hit No. 1 and has achieved platinum status.

“We were a little bit nervous about how people were going to take it,” 19-year-old Niall Horan said of the new album during tour rehearsals. “Everyone gets that second album syndrome.”

The group – which includes Zayn Malik, Liam Payne and Louis Tomlinson – will launch a worldwide tour in February. They hope to work with Katy Perry and are still trying to adjust to the celebrity and fame that has taken over their lives.

“I can see how it gets to people. I guess it’s quite easy to get wrapped up in it all,” Styles said. “We do the same things every other lad our age does. We go out, we have fun, we meet girls and stuff like that. Sometimes it gets written about, which, yeah, we think about it and it’s absolutely crazy. It’s still a bit weird thinking that that’s the way it is.”