## Is 2020 a prime number?

No, 2020 is not a prime number.

For example, 2020 can be divided by 2: 2020 / 2 = 1 010.

To be 2020 a prime number, it would have been required that 2020 has only two divisors, i.e., itself and 1.

## Parity of 2020

2020 is an even number, because it is evenly divisible by 2: 2020 / 2 = 1 010.

## Is 2020 a perfect square 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 2020 is about 44.944.

Thus, the square root of 2020 is not an integer, and therefore 2020 is not a square number.

## What is the square number of 2020?

The square of a number (here 2020) is the result of the product of this number (2020) by itself (i.e., 2020 × 2020); the square of 2020 is sometimes called "raising 2020 to the power 2", or "2020 squared".

The square of 2020 is 4 080 400 because 2020 × 2020 = 2020^{2} = 4 080 400.

As a consequence, 2020 is the square root of 4 080 400.

## Number of digits of 2020

2020 is a number with 4 digits.

## What are the multiples of 2020?

The multiples of 2020 are all integers evenly divisible by 2020, that is all numbers such that the remainder of the division by 2020 is zero. There are infinitely many multiples of 2020. The smallest multiples of 2020 are:

- 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 2020 too, since 0 × 2020 = 0
- 2020: indeed, 2020 is a multiple of itself, since 2020 is evenly divisible by 2020 (we have 2020 / 2020 = 1, so the remainder of this division is indeed zero)
- 4 040: indeed, 4 040 = 2020 × 2
- 6 060: indeed, 6 060 = 2020 × 3
- 8 080: indeed, 8 080 = 2020 × 4
- 10 100: indeed, 10 100 = 2020 × 5
- etc.