Fun with numbers

123456
Across
  1. 1. When you are the winner you are this
  2. 4. You are the runner up
  3. 5. biggest one digit number
  4. 6. Musketeers
Down
  1. 1. We have these many oceans
  2. 2. Sides in a square
  3. 3. Number of planets
  4. 4. These many days in a week