Which is better overall between nikon L 130 bridge and Canon SX 40 HS?

Please give a detailed reply if posble.

Canon.
It's always canon.

Sx40 is much better than L130

The Nikon Coolpix L range are Nikon's most basic cameras (some of them even look like bridge cameras).

Cameras such as the L120 and the L810 and L310 have a good zoom. They LOOK like a real camera, but they are ridiculously basic. They have no view finder, no hot shoe (so you can never attach a decent flash) and NO manual modes (only the auto scene modes) !
Without manual controls you are very VERY limited in what you can do, and very limited in how much you can learn from and grow with the camera. Without an external flash, you'll never get decent flash photo that don't have that "deer in the headlight" type look.

If you're happy to forever stay on Auto, take simple little snapshots and let the camera decide what to do, then you'll probably be happy enough with it, especially if you intend to only take photos in excellent light conditions - they'll turn out quite well then.

If you want to learn, improve and get creative, then this is not the right tool for you. You need something with more options and more controls.
Look for a camera with manual modes (manual, aperture priority and shutter priority), a hot shoe and a viewfinder. Megapixels are NOT important. Stick with Canon, Nikon (check out the Coolpix P range), or perhaps Fujifilm or Panasonic. Bridge cameras will tend to give you better choices and have slightly larger sensors (which is the most important thing).

The SX40HS is BY FAR the better camera - the two are like day and night. It sounds like you should really do a lot more reading and learning before you go shopping - you will love what some subject knowledge can do for you!