Is 427398421 a prime number?

427 398 421 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 427 398 421 is about 20 673.617.

Thus, the square root of 427 398 421 is not an integer, and therefore 427 398 421 is not a square number.

Anyway, 427 398 421 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 427 398 421) is the result of the product of this number (427 398 421) by itself (i.e., 427 398 421 × 427 398 421); the square of 427 398 421 is sometimes called "raising 427 398 421 to the power 2", or "427 398 421 squared".

The square of 427 398 421 is 182 669 410 273 293 248 because 427 398 421 × 427 398 421 = 427 398 421² = 182 669 410 273 293 248.

As a consequence, 427 398 421 is the square root of 182 669 410 273 293 248.

427 398 421 is a number with 9 digits.

The multiples of 427 398 421 are all integers evenly divisible by 427 398 421, that is all numbers such that the remainder of the division by 427 398 421 is zero. There are infinitely many multiples of 427 398 421. The smallest multiples of 427 398 421 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 427 398 421 too, since 0 × 427 398 421 = 0
• 427 398 421: indeed, 427 398 421 is a multiple of itself, since 427 398 421 is evenly divisible by 427 398 421 (we have 427 398 421 / 427 398 421 = 1, so the remainder of this division is indeed zero)
• 854 796 842: indeed, 854 796 842 = 427 398 421 × 2
• 1 282 195 263: indeed, 1 282 195 263 = 427 398 421 × 3
• 1 709 593 684: indeed, 1 709 593 684 = 427 398 421 × 4
• 2 136 992 105: indeed, 2 136 992 105 = 427 398 421 × 5
• etc.

• Preceding numbers: …427 398 419, 427 398 420
• Following numbers: 427 398 422, 427 398 423…

Nearest numbers from 427 398 421

• Preceding prime number: 427 398 409
• Following prime number: 427 398 437

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• 427 398 421 est-il un nombre premier ?