Is 42987 a prime number?

42 987 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 42 987 is about 207.333.

Thus, the square root of 42 987 is not an integer, and therefore 42 987 is not a square number.

The square of a number (here 42 987) is the result of the product of this number (42 987) by itself (i.e., 42 987 × 42 987); the square of 42 987 is sometimes called "raising 42 987 to the power 2", or "42 987 squared".

The square of 42 987 is 1 847 882 169 because 42 987 × 42 987 = 42 987² = 1 847 882 169.

As a consequence, 42 987 is the square root of 1 847 882 169.

42 987 is a number with 5 digits.

The multiples of 42 987 are all integers evenly divisible by 42 987, that is all numbers such that the remainder of the division by 42 987 is zero. There are infinitely many multiples of 42 987. The smallest multiples of 42 987 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 42 987 too, since 0 × 42 987 = 0
• 42 987: indeed, 42 987 is a multiple of itself, since 42 987 is evenly divisible by 42 987 (we have 42 987 / 42 987 = 1, so the remainder of this division is indeed zero)
• 85 974: indeed, 85 974 = 42 987 × 2
• 128 961: indeed, 128 961 = 42 987 × 3
• 171 948: indeed, 171 948 = 42 987 × 4
• 214 935: indeed, 214 935 = 42 987 × 5
• etc.

• Preceding numbers: …42 985, 42 986
• Following numbers: 42 988, 42 989…

Nearest numbers from 42 987

• Preceding prime number: 42 979
• Following prime number: 42 989

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• 42 987 est-il un nombre premier ?