1×84

1×84 is the product obtained by multiplying the integer 84 by the multiplicative identity, 1. The result is 84. This simple expression is commonly used to illustrate the property that multiplying by 1 leaves a number unchanged.

In arithmetic, 1 is the identity element for multiplication. Therefore, for any number a, a×1 = a and 1×a = a. The order of the factors does not affect the product, so 1×84 equals 84×1 as well.

The number 84 itself is an even, composite integer. Its prime factorization is 2^2 × 3 × 7. Consequently, 84 has 12 positive divisors: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84. This set of divisors reflects its factorization and the multiplication rules that govern integers.

As a concrete example, 1×84 serves as a basic demonstration of the multiplicative identity in mathematics, a key concept that underpins more complex operations and algebraic structures. It also functions as a convenient check in mental math or calculator use, confirming that multiplying by 1 yields the unchanged multiplicand.