Is 131421 a prime number?

131 421 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 131 421 is about 362.520.

Thus, the square root of 131 421 is not an integer, and therefore 131 421 is not a square number.

The square of a number (here 131 421) is the result of the product of this number (131 421) by itself (i.e., 131 421 × 131 421); the square of 131 421 is sometimes called "raising 131 421 to the power 2", or "131 421 squared".

The square of 131 421 is 17 271 479 241 because 131 421 × 131 421 = 131 421² = 17 271 479 241.

As a consequence, 131 421 is the square root of 17 271 479 241.

131 421 is a number with 6 digits.

The multiples of 131 421 are all integers evenly divisible by 131 421, that is all numbers such that the remainder of the division by 131 421 is zero. There are infinitely many multiples of 131 421. The smallest multiples of 131 421 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 131 421 too, since 0 × 131 421 = 0
• 131 421: indeed, 131 421 is a multiple of itself, since 131 421 is evenly divisible by 131 421 (we have 131 421 / 131 421 = 1, so the remainder of this division is indeed zero)
• 262 842: indeed, 262 842 = 131 421 × 2
• 394 263: indeed, 394 263 = 131 421 × 3
• 525 684: indeed, 525 684 = 131 421 × 4
• 657 105: indeed, 657 105 = 131 421 × 5
• etc.

• Preceding numbers: …131 419, 131 420
• Following numbers: 131 422, 131 423…

Nearest numbers from 131 421

• Preceding prime number: 131 413
• Following prime number: 131 431

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• 131 421 est-il un nombre premier ?