Does South Korea have a lot of foreigners?

Excuse me, I'm just curious, does South Korea have a significant number of foreigners living there? I've heard that it's a popular destination for immigrants and expats, but I'm not sure if that's true. Could you please elaborate on the foreign population in South Korea, perhaps providing some statistics or examples? I'm particularly interested in knowing about the cultural and economic impacts of these foreigners on the country. Thank you for your time.