4138027121 has 4 divisors (see below), whose sum is σ = 4147628544. Its totient is φ = 4128425700.

The previous prime is 4138027111. The next prime is 4138027123. The reversal of 4138027121 is 1217208314.

4138027121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4138027121 - 2⁶ = 4138027057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4138027123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4800065 + ... + 4800926.

It is an arithmetic number, because the mean of its divisors is an integer number (1036907136).

Almost surely, 2^4138027121 is an apocalyptic number.

It is an amenable number.

4138027121 is a deficient number, since it is larger than the sum of its proper divisors (9601423).

4138027121 is an equidigital number, since it uses as much as digits as its factorization.

4138027121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9601422.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 4138027121 is about 64327.4989487389. The cubic root of 4138027121 is about 1605.4536711788.

The spelling of 4138027121 in words is "four billion, one hundred thirty-eight million, twenty-seven thousand, one hundred twenty-one".