Solve the programming task below in a Python markdown code block.
Reverse and invert all integer values in a given list. 

Python:

    reverse_invert([1,12,'a',3.4,87,99.9,-42,50,5.6]) = [-1,-21,-78,24,-5]
    
Ignore all other types than integer.
Also feel free to reuse/extend the following starter code:
```python
def reverse_invert(lst):
```