Daniel 6:1
"It pleased Darius to set over the kingdom an hundred and twenty princes, which should be over the whole kingdom;"
Cross References (ranked by relevance)
Daniel 5:31
And Darius the Median took the kingdom, being about threescore and two years old.
Esther 1:1
Now it came to pass in the days of Ahasuerus, (this is Ahasuerus which reigned, from India even unto Ethiopia, over an hundred and seven and twenty provinces:)
1 Peter 2:14
Or unto governors, as unto them that are sent by him for the punishment of evildoers, and for the praise of them that do well.