Is 123987 a prime number?

123 987 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 123 987 is about 352.118.

Thus, the square root of 123 987 is not an integer, and therefore 123 987 is not a square number.

The square of a number (here 123 987) is the result of the product of this number (123 987) by itself (i.e., 123 987 × 123 987); the square of 123 987 is sometimes called "raising 123 987 to the power 2", or "123 987 squared".

The square of 123 987 is 15 372 776 169 because 123 987 × 123 987 = 123 987² = 15 372 776 169.

As a consequence, 123 987 is the square root of 15 372 776 169.

123 987 is a number with 6 digits.

The multiples of 123 987 are all integers evenly divisible by 123 987, that is all numbers such that the remainder of the division by 123 987 is zero. There are infinitely many multiples of 123 987. The smallest multiples of 123 987 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 123 987 too, since 0 × 123 987 = 0
• 123 987: indeed, 123 987 is a multiple of itself, since 123 987 is evenly divisible by 123 987 (we have 123 987 / 123 987 = 1, so the remainder of this division is indeed zero)
• 247 974: indeed, 247 974 = 123 987 × 2
• 371 961: indeed, 371 961 = 123 987 × 3
• 495 948: indeed, 495 948 = 123 987 × 4
• 619 935: indeed, 619 935 = 123 987 × 5
• etc.

• Preceding numbers: …123 985, 123 986
• Following numbers: 123 988, 123 989…

Nearest numbers from 123 987

• Preceding prime number: 123 983
• Following prime number: 123 989

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• 123 987 est-il un nombre premier ?