Is 21049 a prime number?

21 049 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 21 049 is about 145.083.

Thus, the square root of 21 049 is not an integer, and therefore 21 049 is not a square number.

The square of a number (here 21 049) is the result of the product of this number (21 049) by itself (i.e., 21 049 × 21 049); the square of 21 049 is sometimes called "raising 21 049 to the power 2", or "21 049 squared".

The square of 21 049 is 443 060 401 because 21 049 × 21 049 = 21 049² = 443 060 401.

As a consequence, 21 049 is the square root of 443 060 401.

21 049 is a number with 5 digits.

The multiples of 21 049 are all integers evenly divisible by 21 049, that is all numbers such that the remainder of the division by 21 049 is zero. There are infinitely many multiples of 21 049. The smallest multiples of 21 049 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 21 049 too, since 0 × 21 049 = 0
• 21 049: indeed, 21 049 is a multiple of itself, since 21 049 is evenly divisible by 21 049 (we have 21 049 / 21 049 = 1, so the remainder of this division is indeed zero)
• 42 098: indeed, 42 098 = 21 049 × 2
• 63 147: indeed, 63 147 = 21 049 × 3
• 84 196: indeed, 84 196 = 21 049 × 4
• 105 245: indeed, 105 245 = 21 049 × 5
• etc.

• Preceding numbers: …21 047, 21 048
• Following numbers: 21 050, 21 051…

Nearest numbers from 21 049

• Preceding prime number: 21 031
• Following prime number: 21 059