# Python program to Reverse a Number

In this tutorial, we will discuss a Python program to reverse a number.

Before going to the program first, let us understand what is a *Reverse Number.*

**Reverse Number:**

- The reverse of a number is a mathematical method to obtain from a number another written in the opposite way to the first.
- For example, reversing the number 1234 gives 4321.

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#### Program code to reverse a number using Python

# Reverse a Number in Python def reverse_number(num): return int(str(num)[::-1]) number = int(input("Enter a number: ")) print(f"The reverse of {number} is {reverse_number(number)}.")

#### Explanation

**Function Definition**: The`reverse_number`

function takes an integer`num`

as input and returns the reverse of the number.**Reverse Calculation**: The function converts the number to a string, reverses the string using slicing, and converts it back to an integer.**Main Program**: The program prompts the user to enter a number and then calculates the reverse of the number using the`reverse_number`

function.

#### Output

- When you run the above program, it will prompt you to enter a number. After entering the number, it will reverse the number and print the result.

#### Conclusion

- In this tutorial, we learned how to reverse a given number using a Python program.
- Understanding this concept is essential for solving various mathematical problems and competitive programming challenges.
- Practice this example to enhance your programming skills and understanding of number manipulation.