No help.
View > Pixel Aspect Ratio has Square checked and Custom Pixel Aspect Ratio has a Factor of 1.000, both of which are what I would expect but not what Premier seems to think about this image.
Are you using CS6? Because Image > Size in CS6 does not show anything like what you suggest. It shows Pixel Dimensions: 4.45M and entry fields for width and height in either pixels or percent. And Document Size with entry fields for Width, Height, and Resolution – but no PAR or anything else in parentheses.
My image is 1080 pixels high and 1440 wide.