Is 21133009 a prime number?

21 133 009 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 21 133 009 is about 4 597.065.

Thus, the square root of 21 133 009 is not an integer, and therefore 21 133 009 is not a square number.

Anyway, 21 133 009 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 21 133 009) is the result of the product of this number (21 133 009) by itself (i.e., 21 133 009 × 21 133 009); the square of 21 133 009 is sometimes called "raising 21 133 009 to the power 2", or "21 133 009 squared".

The square of 21 133 009 is 446 604 069 394 081 because 21 133 009 × 21 133 009 = 21 133 009² = 446 604 069 394 081.

As a consequence, 21 133 009 is the square root of 446 604 069 394 081.

21 133 009 is a number with 8 digits.

The multiples of 21 133 009 are all integers evenly divisible by 21 133 009, that is all numbers such that the remainder of the division by 21 133 009 is zero. There are infinitely many multiples of 21 133 009. The smallest multiples of 21 133 009 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 21 133 009 too, since 0 × 21 133 009 = 0
• 21 133 009: indeed, 21 133 009 is a multiple of itself, since 21 133 009 is evenly divisible by 21 133 009 (we have 21 133 009 / 21 133 009 = 1, so the remainder of this division is indeed zero)
• 42 266 018: indeed, 42 266 018 = 21 133 009 × 2
• 63 399 027: indeed, 63 399 027 = 21 133 009 × 3
• 84 532 036: indeed, 84 532 036 = 21 133 009 × 4
• 105 665 045: indeed, 105 665 045 = 21 133 009 × 5
• etc.

• Preceding numbers: …21 133 007, 21 133 008
• Following numbers: 21 133 010, 21 133 011…

Nearest numbers from 21 133 009

• Preceding prime number: 21 133 003
• Following prime number: 21 133 027

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• 21 133 009 est-il un nombre premier ?