I'd say a teacher, a religious leader, or some kind of political leader. If you really like to think (philosophy) and you're somewhat adept at it (IQ), then I see nothing more rewarding than thinking in a field where you have the opportunity to get involved in other peoples' lives and share your ideas.
As many people have noted, beyond certain IQ tests being open for debate as to accuracy (many seem to measure knowledge over innate intelligence, when they claim the opposite), there is something else to consider. "IQ," even assuming 140 is correct, is a resource in its raw form, unless it is honed through experience, and tempered with wisdom. I've known some exceedingly smart people academically that I wouldn't trust to cross the street without getting run over. That's because they tend to have a hard time connecting to others, and their academic isolation has deprived them of the way things work in a realistic, day-to-day sense. That's why so many of them make excellent researchers but mediocre professors. They have the knowledge, but lack the common touch, the human intuition, to pull it all together into a digestable form.
Hopefully, you are one of the ones who has taken the time to develop a human side to match your intellectual prowess. If that's the case, then give some serious though to a job in the public sector. I think we're at a time where we could use a little more thoughtfulness and intelligence and a little less hateful bigotry to carry us forward into the next chapter.