fun main( args : Array<String> ) { 
  val c = 1000000007L
  val a = readLine()!!.toInt()
  val b = (1..a).map { x ->
    x.toLong()
  }.map { x ->
    x * (2 * x - 1) % c
  }.reduce { y, x ->
    y*x % c
  }
  println( b )
}