Is 42321 a prime number?

42 321 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 42 321 is about 205.721.

Thus, the square root of 42 321 is not an integer, and therefore 42 321 is not a square number.

The square of a number (here 42 321) is the result of the product of this number (42 321) by itself (i.e., 42 321 × 42 321); the square of 42 321 is sometimes called "raising 42 321 to the power 2", or "42 321 squared".

The square of 42 321 is 1 791 067 041 because 42 321 × 42 321 = 42 321² = 1 791 067 041.

As a consequence, 42 321 is the square root of 1 791 067 041.

42 321 is a number with 5 digits.

The multiples of 42 321 are all integers evenly divisible by 42 321, that is all numbers such that the remainder of the division by 42 321 is zero. There are infinitely many multiples of 42 321. The smallest multiples of 42 321 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 42 321 too, since 0 × 42 321 = 0
• 42 321: indeed, 42 321 is a multiple of itself, since 42 321 is evenly divisible by 42 321 (we have 42 321 / 42 321 = 1, so the remainder of this division is indeed zero)
• 84 642: indeed, 84 642 = 42 321 × 2
• 126 963: indeed, 126 963 = 42 321 × 3
• 169 284: indeed, 169 284 = 42 321 × 4
• 211 605: indeed, 211 605 = 42 321 × 5
• etc.

• Preceding numbers: …42 319, 42 320
• Following numbers: 42 322, 42 323…

Nearest numbers from 42 321

• Preceding prime number: 42 307
• Following prime number: 42 323

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• 42 321 est-il un nombre premier ?