Is 42542 a prime number?

42 542 is an even number, because it is evenly divisible by 2: 42 542 / 2 = 21 271.

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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 42 542 is about 206.257.

Thus, the square root of 42 542 is not an integer, and therefore 42 542 is not a square number.

The square of a number (here 42 542) is the result of the product of this number (42 542) by itself (i.e., 42 542 × 42 542); the square of 42 542 is sometimes called "raising 42 542 to the power 2", or "42 542 squared".

The square of 42 542 is 1 809 821 764 because 42 542 × 42 542 = 42 542² = 1 809 821 764.

As a consequence, 42 542 is the square root of 1 809 821 764.

42 542 is a number with 5 digits.

The multiples of 42 542 are all integers evenly divisible by 42 542, that is all numbers such that the remainder of the division by 42 542 is zero. There are infinitely many multiples of 42 542. The smallest multiples of 42 542 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 42 542 too, since 0 × 42 542 = 0
• 42 542: indeed, 42 542 is a multiple of itself, since 42 542 is evenly divisible by 42 542 (we have 42 542 / 42 542 = 1, so the remainder of this division is indeed zero)
• 85 084: indeed, 85 084 = 42 542 × 2
• 127 626: indeed, 127 626 = 42 542 × 3
• 170 168: indeed, 170 168 = 42 542 × 4
• 212 710: indeed, 212 710 = 42 542 × 5
• etc.

• Preceding numbers: …42 540, 42 541
• Following numbers: 42 543, 42 544…

Nearest numbers from 42 542

• Preceding prime number: 42 533
• Following prime number: 42 557

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• 42 542 est-il un nombre premier ?