2021403073 has 2 divisors, whose sum is σ = 2021403074. Its totient is φ = 2021403072.

The previous prime is 2021403067. The next prime is 2021403107. The reversal of 2021403073 is 3703041202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2012688769 + 8714304 = 44863^2 + 2952^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021403073 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021401073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010701536 + 1010701537.

It is an arithmetic number, because the mean of its divisors is an integer number (1010701537).

Almost surely, 2^2021403073 is an apocalyptic number.

It is an amenable number.

2021403073 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021403073 is an equidigital number, since it uses as much as digits as its factorization.

2021403073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 2021403073 is about 44960.0163812248. The cubic root of 2021403073 is about 1264.3994760381.

Adding to 2021403073 its reverse (3703041202), we get a palindrome (5724444275).

The spelling of 2021403073 in words is "two billion, twenty-one million, four hundred three thousand, seventy-three".