Is 42240 a prime number?

42 240 is an even number, because it is evenly divisible by 2: 42 240 / 2 = 21 120.

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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 42 240 is about 205.524.

Thus, the square root of 42 240 is not an integer, and therefore 42 240 is not a square number.

The square of a number (here 42 240) is the result of the product of this number (42 240) by itself (i.e., 42 240 × 42 240); the square of 42 240 is sometimes called "raising 42 240 to the power 2", or "42 240 squared".

The square of 42 240 is 1 784 217 600 because 42 240 × 42 240 = 42 240² = 1 784 217 600.

As a consequence, 42 240 is the square root of 1 784 217 600.

42 240 is a number with 5 digits.

The multiples of 42 240 are all integers evenly divisible by 42 240, that is all numbers such that the remainder of the division by 42 240 is zero. There are infinitely many multiples of 42 240. The smallest multiples of 42 240 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 42 240 too, since 0 × 42 240 = 0
• 42 240: indeed, 42 240 is a multiple of itself, since 42 240 is evenly divisible by 42 240 (we have 42 240 / 42 240 = 1, so the remainder of this division is indeed zero)
• 84 480: indeed, 84 480 = 42 240 × 2
• 126 720: indeed, 126 720 = 42 240 × 3
• 168 960: indeed, 168 960 = 42 240 × 4
• 211 200: indeed, 211 200 = 42 240 × 5
• etc.

• Preceding numbers: …42 238, 42 239
• Following numbers: 42 241, 42 242…

Nearest numbers from 42 240

• Preceding prime number: 42 239
• Following prime number: 42 257

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• 42 240 est-il un nombre premier ?