But 0 is neither positive nor negative, but a positive number between positive and negative numbers, and it is the dividing line between positive and negative numbers. Is the smallest natural number and also a rational number. ?

The properties of 0 are:

1, 0 is neither positive nor negative.

2, 0 is not an odd number but an even number.

3, 0 is neither a prime number nor a composite number.

The opposite number of 4 and 0 is equal to 0.

5, 0 has no reciprocal.

The absolute value of 6 and 0 is equal to 0.

7, in the absolute value of all real numbers, the absolute value of 0 is the smallest, that is, 0.

8. Multiply 0 by any number to get 0, and divide 0 by any real number (excluding 0) to get 0.

9. Any number that adds or subtracts 0 gets itself.

All integers constitute an integer set, which is a number ring. In the integer system, zero and positive integers are collectively called natural numbers. -1, -2, -3, ...-n, ... (n is a non-zero natural number) are negative integers. Positive integer, zero and negative integers form an integer system. Integer does not include decimals and fractions.

Integer: Numbers like -2,-1, 0, 1, 2 are called integers. Integer is the number that represents the number of objects, and 0 means there are 0 objects. Integer is the most basic mathematical tool that human beings can master.