King Obaron's Puzzle

12345678910
Across
  1. 3. the first number
  2. 5. the first four letter number
  3. 7. the derivative of itself multiplied by 2
  4. 8. the last with three letters
  5. 10. the number in the middle
Down
  1. 1. the first number with repeating letters
  2. 2. a crowd
  3. 4. perfect symmetry
  4. 6. Number after five, and before nine
  5. 9. the fifth number
  6. 10. the number after eight, and before ten