Q: What is the negative version of the number 20,405,139?
A: -20,405,139
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 20,405,137 | 20,405,138 | 20,405,140 | 20,405,141 |
| -20,405,137 | -20,405,138 | -20,405,140 | -20,405,141 |