43023540121 has 8 divisors (see below), whose sum is σ = 44737723080. Its totient is φ = 41324731392.

The previous prime is 43023540089. The next prime is 43023540139. The reversal of 43023540121 is 12104532034.

It can be written as a sum of positive squares in 4 ways, for example, as 358572096 + 42664968025 = 18936^2 + 206555^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43023540121 - 2⁵ = 43023540089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43023840121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3837850 + ... + 3849043.

It is an arithmetic number, because the mean of its divisors is an integer number (5592215385).

Almost surely, 2^43023540121 is an apocalyptic number.

It is an amenable number.

43023540121 is a deficient number, since it is larger than the sum of its proper divisors (1714182959).

43023540121 is a wasteful number, since it uses less digits than its factorization.

43023540121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7687115.

The product of its (nonzero) digits is 2880, while the sum is 25.

The spelling of 43023540121 in words is "forty-three billion, twenty-three million, five hundred forty thousand, one hundred twenty-one".