4076045021 has 2 divisors, whose sum is σ = 4076045022. Its totient is φ = 4076045020.

The previous prime is 4076044991. The next prime is 4076045087. The reversal of 4076045021 is 1205406704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4013856025 + 62188996 = 63355^2 + 7886^2 .

It is a cyclic number.

It is not a de Polignac number, because 4076045021 - 2²⁶ = 4008936157 is a prime.

It is a super-2 number, since 2×4076045021² = 33228286026437780882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4076045221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2038022510 + 2038022511.

It is an arithmetic number, because the mean of its divisors is an integer number (2038022511).

Almost surely, 2^4076045021 is an apocalyptic number.

It is an amenable number.

4076045021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4076045021 is an equidigital number, since it uses as much as digits as its factorization.

4076045021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 4076045021 is about 63843.9113855033. The cubic root of 4076045021 is about 1597.3974644935.

The spelling of 4076045021 in words is "four billion, seventy-six million, forty-five thousand, twenty-one".