Is 42223 a prime number?

42 223 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 42 223 is about 205.482.

Thus, the square root of 42 223 is not an integer, and therefore 42 223 is not a square number.

Anyway, 42 223 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 42 223) is the result of the product of this number (42 223) by itself (i.e., 42 223 × 42 223); the square of 42 223 is sometimes called "raising 42 223 to the power 2", or "42 223 squared".

The square of 42 223 is 1 782 781 729 because 42 223 × 42 223 = 42 223² = 1 782 781 729.

As a consequence, 42 223 is the square root of 1 782 781 729.

42 223 is a number with 5 digits.

The multiples of 42 223 are all integers evenly divisible by 42 223, that is all numbers such that the remainder of the division by 42 223 is zero. There are infinitely many multiples of 42 223. The smallest multiples of 42 223 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 42 223 too, since 0 × 42 223 = 0
• 42 223: indeed, 42 223 is a multiple of itself, since 42 223 is evenly divisible by 42 223 (we have 42 223 / 42 223 = 1, so the remainder of this division is indeed zero)
• 84 446: indeed, 84 446 = 42 223 × 2
• 126 669: indeed, 126 669 = 42 223 × 3
• 168 892: indeed, 168 892 = 42 223 × 4
• 211 115: indeed, 211 115 = 42 223 × 5
• etc.

• Preceding numbers: …42 221, 42 222
• Following numbers: 42 224, 42 225…

Nearest numbers from 42 223

• Preceding prime number: 42 221
• Following prime number: 42 227

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• 42 223 est-il un nombre premier ?