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42! Factorial of 42

Value of 42! i.e, Factorial of 42 =
14050061177528798985
43142606244511569936
384000000000



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 42! = 9
To understand factorials, you might find it useful to read the Factorial tutorial over here.
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