Is 142991 a prime number?

142 991 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 142 991 is about 378.142.

Thus, the square root of 142 991 is not an integer, and therefore 142 991 is not a square number.

The square of a number (here 142 991) is the result of the product of this number (142 991) by itself (i.e., 142 991 × 142 991); the square of 142 991 is sometimes called "raising 142 991 to the power 2", or "142 991 squared".

The square of 142 991 is 20 446 426 081 because 142 991 × 142 991 = 142 991² = 20 446 426 081.

As a consequence, 142 991 is the square root of 20 446 426 081.

142 991 is a number with 6 digits.

The multiples of 142 991 are all integers evenly divisible by 142 991, that is all numbers such that the remainder of the division by 142 991 is zero. There are infinitely many multiples of 142 991. The smallest multiples of 142 991 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 142 991 too, since 0 × 142 991 = 0
• 142 991: indeed, 142 991 is a multiple of itself, since 142 991 is evenly divisible by 142 991 (we have 142 991 / 142 991 = 1, so the remainder of this division is indeed zero)
• 285 982: indeed, 285 982 = 142 991 × 2
• 428 973: indeed, 428 973 = 142 991 × 3
• 571 964: indeed, 571 964 = 142 991 × 4
• 714 955: indeed, 714 955 = 142 991 × 5
• etc.

• Preceding numbers: …142 989, 142 990
• Following numbers: 142 992, 142 993…

Nearest numbers from 142 991

• Preceding prime number: 142 981
• Following prime number: 142 993

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• 142 991 est-il un nombre premier ?