7023043021 has 2 divisors, whose sum is σ = 7023043022. Its totient is φ = 7023043020.

The previous prime is 7023042991. The next prime is 7023043061. The reversal of 7023043021 is 1203403207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6968075625 + 54967396 = 83475^2 + 7414^2 .

It is a cyclic number.

It is not a de Polignac number, because 7023043021 - 2⁵ = 7023042989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7023042983 and 7023043001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7023043061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3511521510 + 3511521511.

It is an arithmetic number, because the mean of its divisors is an integer number (3511521511).

Almost surely, 2^7023043021 is an apocalyptic number.

It is an amenable number.

7023043021 is a deficient number, since it is larger than the sum of its proper divisors (1).

7023043021 is an equidigital number, since it uses as much as digits as its factorization.

7023043021 is an evil number, because the sum of its binary digits is even.

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

The square root of 7023043021 is about 83803.5979000902. The cubic root of 7023043021 is about 1915.0279177055.

Adding to 7023043021 its reverse (1203403207), we get a palindrome (8226446228).

The spelling of 7023043021 in words is "seven billion, twenty-three million, forty-three thousand, twenty-one".