Is 978421 a prime number?

978 421 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 978 421 is about 989.152.

Thus, the square root of 978 421 is not an integer, and therefore 978 421 is not a square number.

The square of a number (here 978 421) is the result of the product of this number (978 421) by itself (i.e., 978 421 × 978 421); the square of 978 421 is sometimes called "raising 978 421 to the power 2", or "978 421 squared".

The square of 978 421 is 957 307 653 241 because 978 421 × 978 421 = 978 421² = 957 307 653 241.

As a consequence, 978 421 is the square root of 957 307 653 241.

978 421 is a number with 6 digits.

The multiples of 978 421 are all integers evenly divisible by 978 421, that is all numbers such that the remainder of the division by 978 421 is zero. There are infinitely many multiples of 978 421. The smallest multiples of 978 421 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 978 421 too, since 0 × 978 421 = 0
• 978 421: indeed, 978 421 is a multiple of itself, since 978 421 is evenly divisible by 978 421 (we have 978 421 / 978 421 = 1, so the remainder of this division is indeed zero)
• 1 956 842: indeed, 1 956 842 = 978 421 × 2
• 2 935 263: indeed, 2 935 263 = 978 421 × 3
• 3 913 684: indeed, 3 913 684 = 978 421 × 4
• 4 892 105: indeed, 4 892 105 = 978 421 × 5
• etc.

• Preceding numbers: …978 419, 978 420
• Following numbers: 978 422, 978 423…

Nearest numbers from 978 421

• Preceding prime number: 978 413
• Following prime number: 978 427

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• 978 421 est-il un nombre premier ?