Do it al the time, VGA or HDMI

It likely will work (in the sense of displaying the image). But most TVs are unsuitable for the kind of long-term up-close viewing of a computer monitor.

There’s a reason why computer monitors cost about twice as much as a comparably-sized TV - yet the TVs haven’t replaced them in the market.

On edit- if your primary use is to watch streaming movies - it’s fine.

Does it have an hdmi or other type of input?

With HDMI you can get the best resolution and sound too. I use my 56 in Samsung QLED TV as a monitor and it works well. I am using it to type this. I use a wireless keyboard and mouse from my recliner.

I may have had the world's first 'smart' tv - a micro computer connected to any old flatscreen tv, wireless mouse controlled, using accessibility magnifying features!