He meant 42 (not 142, thats length)

Depending on weight of course... I am 180 and ride a 130cmx40cm. 40 is the width. Wider is better when you are starting out, so you could go all the way up to 46 if you wanted but it won't be a good all around board. Something between 40 and 42 wide would be a good all around board.

Flat, no more than 1" of total rocker from center to tip.