2020

2020 = 101 x 5 x 2 x 2

2020 is the sum of the squares of four consecutive primes: 17² + 19² + 23² + 29² = 2020 (A133524).

2020 is a multiple of 4 whose digits add up to 4 (A063997).

The sum of the digits of 2020 is equal to the number of digits in 2020 (A061384).

2020 is a non-palindromic number divisible by its reverse (0202) (A118959). The reversal of 2020 is a palindrome (A273239).

The year 2020 has one blue moon (A125680). It is also a year in which February has five Saturdays (A176478).