Is 21002 a prime number?

21 002 is an even number, because it is evenly divisible by 2: 21 002 / 2 = 10 501.

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 21 002 is about 144.921.

Thus, the square root of 21 002 is not an integer, and therefore 21 002 is not a square number.

The square of a number (here 21 002) is the result of the product of this number (21 002) by itself (i.e., 21 002 × 21 002); the square of 21 002 is sometimes called "raising 21 002 to the power 2", or "21 002 squared".

The square of 21 002 is 441 084 004 because 21 002 × 21 002 = 21 002² = 441 084 004.

As a consequence, 21 002 is the square root of 441 084 004.

21 002 is a number with 5 digits.

The multiples of 21 002 are all integers evenly divisible by 21 002, that is all numbers such that the remainder of the division by 21 002 is zero. There are infinitely many multiples of 21 002. The smallest multiples of 21 002 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 21 002 too, since 0 × 21 002 = 0
• 21 002: indeed, 21 002 is a multiple of itself, since 21 002 is evenly divisible by 21 002 (we have 21 002 / 21 002 = 1, so the remainder of this division is indeed zero)
• 42 004: indeed, 42 004 = 21 002 × 2
• 63 006: indeed, 63 006 = 21 002 × 3
• 84 008: indeed, 84 008 = 21 002 × 4
• 105 010: indeed, 105 010 = 21 002 × 5
• etc.

• Preceding numbers: …21 000, 21 001
• Following numbers: 21 003, 21 004…

Nearest numbers from 21 002

• Preceding prime number: 21 001
• Following prime number: 21 011

• 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 2807 a prime number?

• Five thousand prime numbers

• Contact

• 21 002 est-il un nombre premier ?