Kotlin Find factorial of a Number using Recursion

Kotlin Find factorial of a Number using Recursion

fun main(args: Array<String>) {
    val number = 4
    val result: Long

    result = factorial(number)
    println("Factorial of $number = $result")
}

fun factorial(n: Int): Long {
    return if (n == 1) n.toLong() else n*factorial(n-1)
}