43926238121 has 2 divisors, whose sum is σ = 43926238122. Its totient is φ = 43926238120.

The previous prime is 43926238099. The next prime is 43926238151. The reversal of 43926238121 is 12183262934.

43926238121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24904311721 + 19021926400 = 157811^2 + 137920^2 .

It is a cyclic number.

It is not a de Polignac number, because 43926238121 - 2²⁶ = 43859129257 is a prime.

It is a super-2 number, since 2×43926238121² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43926238151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21963119060 + 21963119061.

It is an arithmetic number, because the mean of its divisors is an integer number (21963119061).

Almost surely, 2^43926238121 is an apocalyptic number.

It is an amenable number.

43926238121 is a deficient number, since it is larger than the sum of its proper divisors (1).

43926238121 is an equidigital number, since it uses as much as digits as its factorization.

43926238121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 41.

The spelling of 43926238121 in words is "forty-three billion, nine hundred twenty-six million, two hundred thirty-eight thousand, one hundred twenty-one".