Is 42091 a prime number?

42 091 is an odd number, because it is not evenly divisible by 2.

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• What is an even number?

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 42 091 is about 205.161.

Thus, the square root of 42 091 is not an integer, and therefore 42 091 is not a square number.

The square of a number (here 42 091) is the result of the product of this number (42 091) by itself (i.e., 42 091 × 42 091); the square of 42 091 is sometimes called "raising 42 091 to the power 2", or "42 091 squared".

The square of 42 091 is 1 771 652 281 because 42 091 × 42 091 = 42 091² = 1 771 652 281.

As a consequence, 42 091 is the square root of 1 771 652 281.

42 091 is a number with 5 digits.

The multiples of 42 091 are all integers evenly divisible by 42 091, that is all numbers such that the remainder of the division by 42 091 is zero. There are infinitely many multiples of 42 091. The smallest multiples of 42 091 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 42 091 too, since 0 × 42 091 = 0
• 42 091: indeed, 42 091 is a multiple of itself, since 42 091 is evenly divisible by 42 091 (we have 42 091 / 42 091 = 1, so the remainder of this division is indeed zero)
• 84 182: indeed, 84 182 = 42 091 × 2
• 126 273: indeed, 126 273 = 42 091 × 3
• 168 364: indeed, 168 364 = 42 091 × 4
• 210 455: indeed, 210 455 = 42 091 × 5
• etc.

• Preceding numbers: …42 089, 42 090
• Following numbers: 42 092, 42 093…

Nearest numbers from 42 091

• Preceding prime number: 42 089
• Following prime number: 42 101

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• 42 091 est-il un nombre premier ?