12423187541 has 2 divisors, whose sum is σ = 12423187542. Its totient is φ = 12423187540.

The previous prime is 12423187519. The next prime is 12423187549. The reversal of 12423187541 is 14578132421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9368304100 + 3054883441 = 96790^2 + 55271^2 .

It is an emirp because it is prime and its reverse (14578132421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12423187541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12423187495 and 12423187504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12423187549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6211593770 + 6211593771.

It is an arithmetic number, because the mean of its divisors is an integer number (6211593771).

Almost surely, 2^12423187541 is an apocalyptic number.

It is an amenable number.

12423187541 is a deficient number, since it is larger than the sum of its proper divisors (1).

12423187541 is an equidigital number, since it uses as much as digits as its factorization.

12423187541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 38.

The spelling of 12423187541 in words is "twelve billion, four hundred twenty-three million, one hundred eighty-seven thousand, five hundred forty-one".