Answer
$1.2\times10^{5}$
Work Step by Step
The zeros to the right of the 2 are insignificant, therefore we don't want them in the final answer. You must still show the value of the whole number so to do that, we will take the significant numbers (1 and 2) and show them as 1.2 and represent the zeros as $\times10^5$ because we moved the decimal to the left 5 places.