20142020 has 24 divisors (see below), whose sum is σ = 44138304. Its totient is φ = 7706336.

The previous prime is 20142019. The next prime is 20142047. The reversal of 20142020 is 2024102.

It is a junction number, because it is equal to n+sod(n) for n = 20141992 and 20142010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21434 + ... + 22353.

It is an arithmetic number, because the mean of its divisors is an integer number (1839096).

Almost surely, 2^20142020 is an apocalyptic number.

20142020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20142020 is an abundant number, since it is smaller than the sum of its proper divisors (23996284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20142020 is a wasteful number, since it uses less digits than its factorization.

20142020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43819 (or 43817 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 20142020 is about 4487.9861853620. The cubic root of 20142020 is about 272.0827494769.

Adding to 20142020 its reverse (2024102), we get a palindrome (22166122).

The spelling of 20142020 in words is "twenty million, one hundred forty-two thousand, twenty".