642 x 3 = 1926
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642 times 27 equals 17,334
Divide 642 by 3. This equals 214.
642 = 4096 643 = 262144 64 squared and [then] cubed is: (642)3 = 40963 = 68719476736= 646
77,040 because 107 x 2 = 214 214 x 3 = 642 642 x 4 = 2568 2568 x 5 = 12840 12840 x 6 = 77040
You can add up the digits, 6+4+2=12 and if that number is divisible by three, so it the original number. So 12 is certainly divisible by 3 so that means 642 is also.