Is 421821121 a prime number?

421 821 121 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 421 821 121 is about 20 538.284.

Thus, the square root of 421 821 121 is not an integer, and therefore 421 821 121 is not a square number.

Anyway, 421 821 121 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 421 821 121) is the result of the product of this number (421 821 121) by itself (i.e., 421 821 121 × 421 821 121); the square of 421 821 121 is sometimes called "raising 421 821 121 to the power 2", or "421 821 121 squared".

The square of 421 821 121 is 177 933 058 121 696 640 because 421 821 121 × 421 821 121 = 421 821 121² = 177 933 058 121 696 640.

As a consequence, 421 821 121 is the square root of 177 933 058 121 696 640.

421 821 121 is a number with 9 digits.

The multiples of 421 821 121 are all integers evenly divisible by 421 821 121, that is all numbers such that the remainder of the division by 421 821 121 is zero. There are infinitely many multiples of 421 821 121. The smallest multiples of 421 821 121 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 421 821 121 too, since 0 × 421 821 121 = 0
• 421 821 121: indeed, 421 821 121 is a multiple of itself, since 421 821 121 is evenly divisible by 421 821 121 (we have 421 821 121 / 421 821 121 = 1, so the remainder of this division is indeed zero)
• 843 642 242: indeed, 843 642 242 = 421 821 121 × 2
• 1 265 463 363: indeed, 1 265 463 363 = 421 821 121 × 3
• 1 687 284 484: indeed, 1 687 284 484 = 421 821 121 × 4
• 2 109 105 605: indeed, 2 109 105 605 = 421 821 121 × 5
• etc.

• Preceding numbers: …421 821 119, 421 821 120
• Following numbers: 421 821 122, 421 821 123…

Nearest numbers from 421 821 121

• Preceding prime number: 421 821 089
• Following prime number: 421 821 131

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• 421 821 121 est-il un nombre premier ?