Is 42123 a prime number?

42 123 is an odd number, because it is not evenly divisible by 2.

Find out more:

• 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 42 123 is about 205.239.

Thus, the square root of 42 123 is not an integer, and therefore 42 123 is not a square number.

The square of a number (here 42 123) is the result of the product of this number (42 123) by itself (i.e., 42 123 × 42 123); the square of 42 123 is sometimes called "raising 42 123 to the power 2", or "42 123 squared".

The square of 42 123 is 1 774 347 129 because 42 123 × 42 123 = 42 123² = 1 774 347 129.

As a consequence, 42 123 is the square root of 1 774 347 129.

42 123 is a number with 5 digits.

The multiples of 42 123 are all integers evenly divisible by 42 123, that is all numbers such that the remainder of the division by 42 123 is zero. There are infinitely many multiples of 42 123. The smallest multiples of 42 123 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 42 123 too, since 0 × 42 123 = 0
• 42 123: indeed, 42 123 is a multiple of itself, since 42 123 is evenly divisible by 42 123 (we have 42 123 / 42 123 = 1, so the remainder of this division is indeed zero)
• 84 246: indeed, 84 246 = 42 123 × 2
• 126 369: indeed, 126 369 = 42 123 × 3
• 168 492: indeed, 168 492 = 42 123 × 4
• 210 615: indeed, 210 615 = 42 123 × 5
• etc.

• Preceding numbers: …42 121, 42 122
• Following numbers: 42 124, 42 125…

Nearest numbers from 42 123

• Preceding prime number: 42 101
• Following prime number: 42 131

• Is 0 a prime number?
• Is 1 a prime number?
• Is 2 a prime number?
• Is 2024 a prime number?
• Is 2025 a prime number?
• Is 5124 a prime number?

• Five thousand prime numbers

• Contact

• 42 123 est-il un nombre premier ?