Is 42161 a prime number?

42 161 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 42 161 is about 205.331.

Thus, the square root of 42 161 is not an integer, and therefore 42 161 is not a square number.

The square of a number (here 42 161) is the result of the product of this number (42 161) by itself (i.e., 42 161 × 42 161); the square of 42 161 is sometimes called "raising 42 161 to the power 2", or "42 161 squared".

The square of 42 161 is 1 777 549 921 because 42 161 × 42 161 = 42 161² = 1 777 549 921.

As a consequence, 42 161 is the square root of 1 777 549 921.

42 161 is a number with 5 digits.

The multiples of 42 161 are all integers evenly divisible by 42 161, that is all numbers such that the remainder of the division by 42 161 is zero. There are infinitely many multiples of 42 161. The smallest multiples of 42 161 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 42 161 too, since 0 × 42 161 = 0
• 42 161: indeed, 42 161 is a multiple of itself, since 42 161 is evenly divisible by 42 161 (we have 42 161 / 42 161 = 1, so the remainder of this division is indeed zero)
• 84 322: indeed, 84 322 = 42 161 × 2
• 126 483: indeed, 126 483 = 42 161 × 3
• 168 644: indeed, 168 644 = 42 161 × 4
• 210 805: indeed, 210 805 = 42 161 × 5
• etc.

• Preceding numbers: …42 159, 42 160
• Following numbers: 42 162, 42 163…

Nearest numbers from 42 161

• Preceding prime number: 42 157
• Following prime number: 42 169

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• 42 161 est-il un nombre premier ?