Is 42947 a prime number?

42 947 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 42 947 is about 207.237.

Thus, the square root of 42 947 is not an integer, and therefore 42 947 is not a square number.

The square of a number (here 42 947) is the result of the product of this number (42 947) by itself (i.e., 42 947 × 42 947); the square of 42 947 is sometimes called "raising 42 947 to the power 2", or "42 947 squared".

The square of 42 947 is 1 844 444 809 because 42 947 × 42 947 = 42 947² = 1 844 444 809.

As a consequence, 42 947 is the square root of 1 844 444 809.

42 947 is a number with 5 digits.

The multiples of 42 947 are all integers evenly divisible by 42 947, that is all numbers such that the remainder of the division by 42 947 is zero. There are infinitely many multiples of 42 947. The smallest multiples of 42 947 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 42 947 too, since 0 × 42 947 = 0
• 42 947: indeed, 42 947 is a multiple of itself, since 42 947 is evenly divisible by 42 947 (we have 42 947 / 42 947 = 1, so the remainder of this division is indeed zero)
• 85 894: indeed, 85 894 = 42 947 × 2
• 128 841: indeed, 128 841 = 42 947 × 3
• 171 788: indeed, 171 788 = 42 947 × 4
• 214 735: indeed, 214 735 = 42 947 × 5
• etc.

• Preceding numbers: …42 945, 42 946
• Following numbers: 42 948, 42 949…

Nearest numbers from 42 947

• Preceding prime number: 42 943
• Following prime number: 42 953

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• 42 947 est-il un nombre premier ?