Why is using nextInt(); messing with the formatting?

Question

This is my program at the moment:

import java.util.Scanner;
class Main {
  public static void main(String[] args) {

    Scanner input = new Scanner(System.in);
    String actionNum;

    while(true) {
      //User validation
      while(true) {
        System.out.print("Type 1: ");
        actionNum = input.nextLine();
        if(actionNum.equals("1")) {
          break;
        }
      }

      if(actionNum.equals("1")) {
        System.out.print("Enter word: ");
        String meals = input.nextLine();
        System.out.print("Enter number: ");
        int cost = input.nextInt();
      }
    }
  }
}

When I use nextInt(); on line 22 in my program, the console prints out:

Enter word: word
Enter number: 1
Type 1: Type 1:

Why is Type 1: being printed out twice? If I take out the nextInt();, only one Type 1: is printed out, which is what I want. Is something in my program causing it to do enter twice?