Is 42661 a prime number?

42 661 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 42 661 is about 206.545.

Thus, the square root of 42 661 is not an integer, and therefore 42 661 is not a square number.

The square of a number (here 42 661) is the result of the product of this number (42 661) by itself (i.e., 42 661 × 42 661); the square of 42 661 is sometimes called "raising 42 661 to the power 2", or "42 661 squared".

The square of 42 661 is 1 819 960 921 because 42 661 × 42 661 = 42 661² = 1 819 960 921.

As a consequence, 42 661 is the square root of 1 819 960 921.

42 661 is a number with 5 digits.

The multiples of 42 661 are all integers evenly divisible by 42 661, that is all numbers such that the remainder of the division by 42 661 is zero. There are infinitely many multiples of 42 661. The smallest multiples of 42 661 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 42 661 too, since 0 × 42 661 = 0
• 42 661: indeed, 42 661 is a multiple of itself, since 42 661 is evenly divisible by 42 661 (we have 42 661 / 42 661 = 1, so the remainder of this division is indeed zero)
• 85 322: indeed, 85 322 = 42 661 × 2
• 127 983: indeed, 127 983 = 42 661 × 3
• 170 644: indeed, 170 644 = 42 661 × 4
• 213 305: indeed, 213 305 = 42 661 × 5
• etc.

• Preceding numbers: …42 659, 42 660
• Following numbers: 42 662, 42 663…

Nearest numbers from 42 661

• Preceding prime number: 42 649
• Following prime number: 42 667

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• 42 661 est-il un nombre premier ?