Is 123009 a prime number?

123 009 is an odd number, because it is not evenly divisible by 2.

Find out more:

• 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 123 009 is about 350.726.

Thus, the square root of 123 009 is not an integer, and therefore 123 009 is not a square number.

The square of a number (here 123 009) is the result of the product of this number (123 009) by itself (i.e., 123 009 × 123 009); the square of 123 009 is sometimes called "raising 123 009 to the power 2", or "123 009 squared".

The square of 123 009 is 15 131 214 081 because 123 009 × 123 009 = 123 009² = 15 131 214 081.

As a consequence, 123 009 is the square root of 15 131 214 081.

123 009 is a number with 6 digits.

The multiples of 123 009 are all integers evenly divisible by 123 009, that is all numbers such that the remainder of the division by 123 009 is zero. There are infinitely many multiples of 123 009. The smallest multiples of 123 009 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 123 009 too, since 0 × 123 009 = 0
• 123 009: indeed, 123 009 is a multiple of itself, since 123 009 is evenly divisible by 123 009 (we have 123 009 / 123 009 = 1, so the remainder of this division is indeed zero)
• 246 018: indeed, 246 018 = 123 009 × 2
• 369 027: indeed, 369 027 = 123 009 × 3
• 492 036: indeed, 492 036 = 123 009 × 4
• 615 045: indeed, 615 045 = 123 009 × 5
• etc.

• Preceding numbers: …123 007, 123 008
• Following numbers: 123 010, 123 011…

Nearest numbers from 123 009

• Preceding prime number: 123 007
• Following prime number: 123 017

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• 123 009 est-il un nombre premier ?