12140043541 has 2 divisors, whose sum is σ = 12140043542. Its totient is φ = 12140043540.

The previous prime is 12140043533. The next prime is 12140043547. The reversal of 12140043541 is 14534004121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8327475025 + 3812568516 = 91255^2 + 61746^2 .

It is a cyclic number.

It is not a de Polignac number, because 12140043541 - 2³ = 12140043533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12140043547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6070021770 + 6070021771.

It is an arithmetic number, because the mean of its divisors is an integer number (6070021771).

Almost surely, 2^12140043541 is an apocalyptic number.

It is an amenable number.

12140043541 is a deficient number, since it is larger than the sum of its proper divisors (1).

12140043541 is an equidigital number, since it uses as much as digits as its factorization.

12140043541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 12140043541 its reverse (14534004121), we get a palindrome (26674047662).

The spelling of 12140043541 in words is "twelve billion, one hundred forty million, forty-three thousand, five hundred forty-one".