Is 87121 a prime number?

87 121 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 87 121 is about 295.163.

Thus, the square root of 87 121 is not an integer, and therefore 87 121 is not a square number.

Anyway, 87 121 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 87 121) is the result of the product of this number (87 121) by itself (i.e., 87 121 × 87 121); the square of 87 121 is sometimes called "raising 87 121 to the power 2", or "87 121 squared".

The square of 87 121 is 7 590 068 641 because 87 121 × 87 121 = 87 121² = 7 590 068 641.

As a consequence, 87 121 is the square root of 7 590 068 641.

87 121 is a number with 5 digits.

The multiples of 87 121 are all integers evenly divisible by 87 121, that is all numbers such that the remainder of the division by 87 121 is zero. There are infinitely many multiples of 87 121. The smallest multiples of 87 121 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 87 121 too, since 0 × 87 121 = 0
• 87 121: indeed, 87 121 is a multiple of itself, since 87 121 is evenly divisible by 87 121 (we have 87 121 / 87 121 = 1, so the remainder of this division is indeed zero)
• 174 242: indeed, 174 242 = 87 121 × 2
• 261 363: indeed, 261 363 = 87 121 × 3
• 348 484: indeed, 348 484 = 87 121 × 4
• 435 605: indeed, 435 605 = 87 121 × 5
• etc.

• Preceding numbers: …87 119, 87 120
• Following numbers: 87 122, 87 123…

Nearest numbers from 87 121

• Preceding prime number: 87 119
• Following prime number: 87 133

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• 87 121 est-il un nombre premier ?