12492140261 has 2 divisors, whose sum is σ = 12492140262. Its totient is φ = 12492140260.

The previous prime is 12492140251. The next prime is 12492140267. The reversal of 12492140261 is 16204129421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9047624161 + 3444516100 = 95119^2 + 58690^2 .

It is a cyclic number.

It is not a de Polignac number, because 12492140261 - 2¹⁴ = 12492123877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12492140267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6246070130 + 6246070131.

It is an arithmetic number, because the mean of its divisors is an integer number (6246070131).

Almost surely, 2^12492140261 is an apocalyptic number.

It is an amenable number.

12492140261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12492140261 is an equidigital number, since it uses as much as digits as its factorization.

12492140261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

Adding to 12492140261 its reverse (16204129421), we get a palindrome (28696269682).

The spelling of 12492140261 in words is "twelve billion, four hundred ninety-two million, one hundred forty thousand, two hundred sixty-one".