Is 42909 a prime number?

42 909 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 42 909 is about 207.145.

Thus, the square root of 42 909 is not an integer, and therefore 42 909 is not a square number.

The square of a number (here 42 909) is the result of the product of this number (42 909) by itself (i.e., 42 909 × 42 909); the square of 42 909 is sometimes called "raising 42 909 to the power 2", or "42 909 squared".

The square of 42 909 is 1 841 182 281 because 42 909 × 42 909 = 42 909² = 1 841 182 281.

As a consequence, 42 909 is the square root of 1 841 182 281.

42 909 is a number with 5 digits.

The multiples of 42 909 are all integers evenly divisible by 42 909, that is all numbers such that the remainder of the division by 42 909 is zero. There are infinitely many multiples of 42 909. The smallest multiples of 42 909 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 42 909 too, since 0 × 42 909 = 0
• 42 909: indeed, 42 909 is a multiple of itself, since 42 909 is evenly divisible by 42 909 (we have 42 909 / 42 909 = 1, so the remainder of this division is indeed zero)
• 85 818: indeed, 85 818 = 42 909 × 2
• 128 727: indeed, 128 727 = 42 909 × 3
• 171 636: indeed, 171 636 = 42 909 × 4
• 214 545: indeed, 214 545 = 42 909 × 5
• etc.

• Preceding numbers: …42 907, 42 908
• Following numbers: 42 910, 42 911…

Nearest numbers from 42 909

• Preceding prime number: 42 901
• Following prime number: 42 923

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• 42 909 est-il un nombre premier ?