40123209041 has 2 divisors, whose sum is σ = 40123209042. Its totient is φ = 40123209040.

The previous prime is 40123209029. The next prime is 40123209047. The reversal of 40123209041 is 14090232104.

40123209041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35392520641 + 4730688400 = 188129^2 + 68780^2 .

It is a cyclic number.

It is not a de Polignac number, because 40123209041 - 2²⁶ = 40056100177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40123209041.

It is not a weakly prime, because it can be changed into another prime (40123209047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20061604520 + 20061604521.

It is an arithmetic number, because the mean of its divisors is an integer number (20061604521).

Almost surely, 2^40123209041 is an apocalyptic number.

It is an amenable number.

40123209041 is a deficient number, since it is larger than the sum of its proper divisors (1).

40123209041 is an equidigital number, since it uses as much as digits as its factorization.

40123209041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 40123209041 in words is "forty billion, one hundred twenty-three million, two hundred nine thousand, forty-one".