PvZ2 requirements?

What is minimum system requirements for playing PvZ2? .. because I'm unable to install game through play store, it is not visible at all for my device, and when download/install over website, like regular apk installation then after start message inform me like maybe I did not purchase app?!

specs:

android Jelly Bean 4.2

1gb ram

dual-core Cortex A9 processor

thanks!