Yeah, I think the rest of my application was really strong. I had great recommenders and a really strong SOP. I fought hard for that 142, lol! So yeah, I'd encourage you to keep working hard, but also to make sure the other parts of your application really make you stand out.
I got a 142 quant after pulling it up from a 136 and was accepted at Vanderbilt, Syracuse, Villanova's Philosophy program and was waitlisted at Duke and Emory. I was concerned my scores might work against me,but if your verbal and writing are strong (I got 165 and 6, respectively), I really don't think bad quant scores will hold you back from having the rest of your application taken seriously.