What regular expression can I use to validate a number with thousands separator, and decimal separator in JS?

I have searched for some implementation (with regex in JS or another way in JS) that allows me to validate if the value of an input is a number, besides allowing (if the value to validate) has the decimal point or separator of thousands (comma).

For example

allowed values:

     123

     1235684421545.56

     123,456,789,523.12

     123,456

     123568

     123589,456

Values ​​not allowed:

     12,5669

     125.236,56

     125,18

Thanks