8420

1. An even number that occurs after 8419
2. An even number that occurs before 8421
3. When all the number (8,4,2, and 0) are added the number 14 appears, and the digits in 14 add up to 5.
4. There are 4 digits in 8420 and it adds up to 5.
5. This is number 5.

Bob saw Alice in a rocket ship and shouted 8420.

by mister cow November 5, 2007