Is 72121 a prime number?

72 121 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 72 121 is about 268.554.

Thus, the square root of 72 121 is not an integer, and therefore 72 121 is not a square number.

The square of a number (here 72 121) is the result of the product of this number (72 121) by itself (i.e., 72 121 × 72 121); the square of 72 121 is sometimes called "raising 72 121 to the power 2", or "72 121 squared".

The square of 72 121 is 5 201 438 641 because 72 121 × 72 121 = 72 121² = 5 201 438 641.

As a consequence, 72 121 is the square root of 5 201 438 641.

72 121 is a number with 5 digits.

The multiples of 72 121 are all integers evenly divisible by 72 121, that is all numbers such that the remainder of the division by 72 121 is zero. There are infinitely many multiples of 72 121. The smallest multiples of 72 121 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 72 121 too, since 0 × 72 121 = 0
• 72 121: indeed, 72 121 is a multiple of itself, since 72 121 is evenly divisible by 72 121 (we have 72 121 / 72 121 = 1, so the remainder of this division is indeed zero)
• 144 242: indeed, 144 242 = 72 121 × 2
• 216 363: indeed, 216 363 = 72 121 × 3
• 288 484: indeed, 288 484 = 72 121 × 4
• 360 605: indeed, 360 605 = 72 121 × 5
• etc.

• Preceding numbers: …72 119, 72 120
• Following numbers: 72 122, 72 123…

Nearest numbers from 72 121

• Preceding prime number: 72 109
• Following prime number: 72 139

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• 72 121 est-il un nombre premier ?