Add Yahoo as a preferred source to see more of our stories on Google. Here's exactly why the number 123 keeps popping up and what it means. So, what does 123 mean? Within a set of numbers, like 123, ...

From the license plate on your Uber to the song that gets stuck in your head, the numbers 123 seem to keep following you around. You keep looking at your phone at 1:23—a.m. and p.m. Spotify keeps ...