Q: What is the negative version of the number 21,405,861?
A: -21,405,861
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:
| 21,405,859 | 21,405,860 | 21,405,862 | 21,405,863 |
| -21,405,859 | -21,405,860 | -21,405,862 | -21,405,863 |