The generated number is always in network byte order.
The number is calculated as 68*256^3 + 207*256^2 + 224*256 + 40.
mysql>
mysql> SELECT INET_ATON('68.207.224.40');
+----------------------------+
| INET_ATON('68.207.224.40') |
+----------------------------+
| 1154474024 |
+----------------------------+
1 row in set (0.00 sec)
mysql>