4045062121 has 2 divisors, whose sum is σ = 4045062122. Its totient is φ = 4045062120.

The previous prime is 4045062107. The next prime is 4045062149. The reversal of 4045062121 is 1212605404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2483626896 + 1561435225 = 49836^2 + 39515^2 .

It is a cyclic number.

It is not a de Polignac number, because 4045062121 - 2⁵ = 4045062089 is a prime.

It is not a weakly prime, because it can be changed into another prime (4045062181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2022531060 + 2022531061.

It is an arithmetic number, because the mean of its divisors is an integer number (2022531061).

Almost surely, 2^4045062121 is an apocalyptic number.

It is an amenable number.

4045062121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4045062121 is an equidigital number, since it uses as much as digits as its factorization.

4045062121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 4045062121 is about 63600.8028329832. The cubic root of 4045062121 is about 1593.3397780425.

Adding to 4045062121 its reverse (1212605404), we get a palindrome (5257667525).

The spelling of 4045062121 in words is "four billion, forty-five million, sixty-two thousand, one hundred twenty-one".