Is 42807 a prime number?

42 807 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 42 807 is about 206.899.

Thus, the square root of 42 807 is not an integer, and therefore 42 807 is not a square number.

The square of a number (here 42 807) is the result of the product of this number (42 807) by itself (i.e., 42 807 × 42 807); the square of 42 807 is sometimes called "raising 42 807 to the power 2", or "42 807 squared".

The square of 42 807 is 1 832 439 249 because 42 807 × 42 807 = 42 807² = 1 832 439 249.

As a consequence, 42 807 is the square root of 1 832 439 249.

42 807 is a number with 5 digits.

The multiples of 42 807 are all integers evenly divisible by 42 807, that is all numbers such that the remainder of the division by 42 807 is zero. There are infinitely many multiples of 42 807. The smallest multiples of 42 807 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 42 807 too, since 0 × 42 807 = 0
• 42 807: indeed, 42 807 is a multiple of itself, since 42 807 is evenly divisible by 42 807 (we have 42 807 / 42 807 = 1, so the remainder of this division is indeed zero)
• 85 614: indeed, 85 614 = 42 807 × 2
• 128 421: indeed, 128 421 = 42 807 × 3
• 171 228: indeed, 171 228 = 42 807 × 4
• 214 035: indeed, 214 035 = 42 807 × 5
• etc.

• Preceding numbers: …42 805, 42 806
• Following numbers: 42 808, 42 809…

Nearest numbers from 42 807

• Preceding prime number: 42 797
• Following prime number: 42 821

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• 42 807 est-il un nombre premier ?