4026007021 has 2 divisors, whose sum is σ = 4026007022. Its totient is φ = 4026007020.

The previous prime is 4026007001. The next prime is 4026007067. The reversal of 4026007021 is 1207006204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3015657225 + 1010349796 = 54915^2 + 31786^2 .

It is a cyclic number.

It is not a de Polignac number, because 4026007021 - 2²⁵ = 3992452589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4026006983 and 4026007001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4026007001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2013003510 + 2013003511.

It is an arithmetic number, because the mean of its divisors is an integer number (2013003511).

Almost surely, 2^4026007021 is an apocalyptic number.

It is an amenable number.

4026007021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4026007021 is an equidigital number, since it uses as much as digits as its factorization.

4026007021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 4026007021 is about 63450.8236431963. The cubic root of 4026007021 is about 1590.8339205003.

The spelling of 4026007021 in words is "four billion, twenty-six million, seven thousand, twenty-one".