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123! Factorial of 123

Value of 123! i.e, Factorial of 123 =
12146304367025329675
76624324188129585545
42170884833823153289
18161829235892362167
66883115696061264020
21707358352212940477
82591091570411651472
18602951990626164673
07339074198149529600
00000000000000000000
000000



In general, the factorial of a number N = N*(N-1)*(N-2)....1
Factorial of a non-negative integer n is the product of all positive integers less than or equal to n. Factorials are commonly encountered in permutations, combinations, number theory and series expansions of trigonometric and other functions (Taylor series).

Number of trailing zeros in 123! = 28
To understand factorials, you might find it useful to read the Factorial tutorial over here.
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