Is 42787 a prime number?

42 787 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 42 787 is about 206.850.

Thus, the square root of 42 787 is not an integer, and therefore 42 787 is not a square number.

Anyway, 42 787 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 42 787) is the result of the product of this number (42 787) by itself (i.e., 42 787 × 42 787); the square of 42 787 is sometimes called "raising 42 787 to the power 2", or "42 787 squared".

The square of 42 787 is 1 830 727 369 because 42 787 × 42 787 = 42 787² = 1 830 727 369.

As a consequence, 42 787 is the square root of 1 830 727 369.

42 787 is a number with 5 digits.

The multiples of 42 787 are all integers evenly divisible by 42 787, that is all numbers such that the remainder of the division by 42 787 is zero. There are infinitely many multiples of 42 787. The smallest multiples of 42 787 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 42 787 too, since 0 × 42 787 = 0
• 42 787: indeed, 42 787 is a multiple of itself, since 42 787 is evenly divisible by 42 787 (we have 42 787 / 42 787 = 1, so the remainder of this division is indeed zero)
• 85 574: indeed, 85 574 = 42 787 × 2
• 128 361: indeed, 128 361 = 42 787 × 3
• 171 148: indeed, 171 148 = 42 787 × 4
• 213 935: indeed, 213 935 = 42 787 × 5
• etc.

• Preceding numbers: …42 785, 42 786
• Following numbers: 42 788, 42 789…

Nearest numbers from 42 787

• Preceding prime number: 42 773
• Following prime number: 42 793

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• 42 787 est-il un nombre premier ?