What is the next number in the pattern? :
2, 6, 18, 144, 2736,

54,730??? Because 2*3=6 , 6*3=18 , 18*18=145 144*19=2736 and 2736*20=54740

Here, pattern is a₃ = a₂(a₁+1)    [ for odd place numbers ]
& a₄ = a₃(a₂+2)                          [ for even place numbers ]

Now, we have 1st number = 2
2nd = 6
3rd = 6(2+1) = 6(3) = 18
4th = 18(6+2) = 18(8) = 144
5th = 144(18+1) = 144(19) = 2736

6th = 2736 (144+2) = 2736(146) = 3,99,456

So, your final answer is 3,99,456

Hope this helps!