An image processing apparatus having functions includes an image processing unit that executes the functions; a memory that stores a function table including function identification information identifying the functions, initial values preset for the functions, and registered values set for the functions by a user, in a corresponding manner to each other; a display processing unit that displays a function list screen on which initial value buttons for calling up an initial value function screen accepting an input of an instruction from the user to execute the function using the initial values, and first registered value buttons for calling up a registered value function screen accepting an input of the instruction from the user to execute the function using the registered values are arranged; and an accepting unit accepting a selection of the initial value button or the first registered value button on the function list screen from the user.