12542350397 has 2 divisors, whose sum is σ = 12542350398. Its totient is φ = 12542350396.

The previous prime is 12542350351. The next prime is 12542350417. The reversal of 12542350397 is 79305324521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8300303236 + 4242047161 = 91106^2 + 65131^2 .

It is a cyclic number.

It is not a de Polignac number, because 12542350397 - 2⁸ = 12542350141 is a prime.

It is a super-2 number, since 2×12542350397² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12542350097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6271175198 + 6271175199.

It is an arithmetic number, because the mean of its divisors is an integer number (6271175199).

Almost surely, 2^12542350397 is an apocalyptic number.

It is an amenable number.

12542350397 is a deficient number, since it is larger than the sum of its proper divisors (1).

12542350397 is an equidigital number, since it uses as much as digits as its factorization.

12542350397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 12542350397 in words is "twelve billion, five hundred forty-two million, three hundred fifty thousand, three hundred ninety-seven".