The number "+1 (555) 123-4567" is a fictional telephone number commonly used in media and entertainment. The "+1" indicates that it is a North American number, with the "555" prefix often reserved for use in movies and television shows to prevent real calls. In the North American numbering plan, the "555" prefix is specifically designated for this purpose, allowing creators to avoid using actual phone numbers. This helps protect privacy and ensures that viewers do not accidentally call a real person or business when they see a phone number on screen.