Correct Answer: 742956

Solution : Let's check the given options –
First option: 564327; 5 + 6 + 4 + 3 + 2 + 7 = 27
Second option: 368127; 3 + 6 + 8 + 1 + 2 + 7 = 27
Third option: 876321; 8 + 7 + 6 + 3 + 2 + 1 = 27
Fourth option: 742956; 7 + 4 + 2 + 9 + 5 + 6 = 33 ≠ 27

So, the fourth option differs from the other three options because the sum of the digits equals 33 instead of 27. Hence, the fourth option is correct.