Is 40123 a prime number?

40 123 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 40 123 is about 200.307.

Thus, the square root of 40 123 is not an integer, and therefore 40 123 is not a square number.

Anyway, 40 123 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 40 123) is the result of the product of this number (40 123) by itself (i.e., 40 123 × 40 123); the square of 40 123 is sometimes called "raising 40 123 to the power 2", or "40 123 squared".

The square of 40 123 is 1 609 855 129 because 40 123 × 40 123 = 40 123² = 1 609 855 129.

As a consequence, 40 123 is the square root of 1 609 855 129.

40 123 is a number with 5 digits.

The multiples of 40 123 are all integers evenly divisible by 40 123, that is all numbers such that the remainder of the division by 40 123 is zero. There are infinitely many multiples of 40 123. The smallest multiples of 40 123 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 40 123 too, since 0 × 40 123 = 0
• 40 123: indeed, 40 123 is a multiple of itself, since 40 123 is evenly divisible by 40 123 (we have 40 123 / 40 123 = 1, so the remainder of this division is indeed zero)
• 80 246: indeed, 80 246 = 40 123 × 2
• 120 369: indeed, 120 369 = 40 123 × 3
• 160 492: indeed, 160 492 = 40 123 × 4
• 200 615: indeed, 200 615 = 40 123 × 5
• etc.

• Preceding numbers: …40 121, 40 122
• Following numbers: 40 124, 40 125…

Nearest numbers from 40 123

• Preceding prime number: 40 111
• Following prime number: 40 127

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• 40 123 est-il un nombre premier ?