Java Program to Check Peterson Number

public class PetersonNumber {
    public static void main(String[] args) {
        int num = 145;
        int temp = num;
        int sum = 0;

        while (temp > 0) {
            int digit = temp % 10;
            sum += factorial(digit);
            temp /= 10;
        }

        if (sum == num)
            System.out.println(num + " is a Peterson Number.");
        else
            System.out.println(num + " is not a Peterson Number.");
    }

    static int factorial(int n) {
        int fact = 1;
        for (int i = 1; i <= n; i++)
            fact *= i;
        return fact;
    }
}

145 is a Peterson Number.