4020121043 has 2 divisors, whose sum is σ = 4020121044. Its totient is φ = 4020121042.

The previous prime is 4020121009. The next prime is 4020121067. The reversal of 4020121043 is 3401210204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4020121043 - 2⁸ = 4020120787 is a prime.

It is a super-2 number, since 2×4020121043² = 32322746400742815698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4020121093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010060521 + 2010060522.

It is an arithmetic number, because the mean of its divisors is an integer number (2010060522).

Almost surely, 2^4020121043 is an apocalyptic number.

4020121043 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020121043 is an equidigital number, since it uses as much as digits as its factorization.

4020121043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 4020121043 is about 63404.4244749529. The cubic root of 4020121043 is about 1590.0582818187.

Adding to 4020121043 its reverse (3401210204), we get a palindrome (7421331247).

The spelling of 4020121043 in words is "four billion, twenty million, one hundred twenty-one thousand, forty-three".