“Locked Out Of Heaven” tops the 4 million mark in overall digital sales. It’s Mars’ third hit to reach that level, following “Just The Way You Are” (5,781,000) and “Grenade” (5,569,000). Mars is only the second male solo artist to amass three 4-million-selling digital hits. He follows Eminem, who has scored with “Love The Way You Lie” (featuring Rihanna, 5,879,000), “Lose Yourself” (5,452,000) and “Not Afraid” (4,948,000).