2020003123 has 4 divisors (see below), whose sum is σ = 2074597840. Its totient is φ = 1965408408.

The previous prime is 2020003103. The next prime is 2020003163. The reversal of 2020003123 is 3213000202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020003123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2020003103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27297303 + ... + 27297376.

It is an arithmetic number, because the mean of its divisors is an integer number (518649460).

Almost surely, 2^2020003123 is an apocalyptic number.

2020003123 is a deficient number, since it is larger than the sum of its proper divisors (54594717).

2020003123 is an equidigital number, since it uses as much as digits as its factorization.

2020003123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54594716.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 2020003123 is about 44944.4448513940. Note that the first 3 decimals coincide. The cubic root of 2020003123 is about 1264.1075163160.

Adding to 2020003123 its reverse (3213000202), we get a palindrome (5233003325).

The spelling of 2020003123 in words is "two billion, twenty million, three thousand, one hundred twenty-three".