Is 42665 a prime number?

42 665 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 42 665 is about 206.555.

Thus, the square root of 42 665 is not an integer, and therefore 42 665 is not a square number.

The square of a number (here 42 665) is the result of the product of this number (42 665) by itself (i.e., 42 665 × 42 665); the square of 42 665 is sometimes called "raising 42 665 to the power 2", or "42 665 squared".

The square of 42 665 is 1 820 302 225 because 42 665 × 42 665 = 42 665² = 1 820 302 225.

As a consequence, 42 665 is the square root of 1 820 302 225.

42 665 is a number with 5 digits.

The multiples of 42 665 are all integers evenly divisible by 42 665, that is all numbers such that the remainder of the division by 42 665 is zero. There are infinitely many multiples of 42 665. The smallest multiples of 42 665 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 42 665 too, since 0 × 42 665 = 0
• 42 665: indeed, 42 665 is a multiple of itself, since 42 665 is evenly divisible by 42 665 (we have 42 665 / 42 665 = 1, so the remainder of this division is indeed zero)
• 85 330: indeed, 85 330 = 42 665 × 2
• 127 995: indeed, 127 995 = 42 665 × 3
• 170 660: indeed, 170 660 = 42 665 × 4
• 213 325: indeed, 213 325 = 42 665 × 5
• etc.

• Preceding numbers: …42 663, 42 664
• Following numbers: 42 666, 42 667…

Nearest numbers from 42 665

• Preceding prime number: 42 649
• Following prime number: 42 667

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• 42 665 est-il un nombre premier ?