12402434171 has 2 divisors, whose sum is σ = 12402434172. Its totient is φ = 12402434170.

The previous prime is 12402434087. The next prime is 12402434179. The reversal of 12402434171 is 17143420421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12402434171 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12402434179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6201217085 + 6201217086.

It is an arithmetic number, because the mean of its divisors is an integer number (6201217086).

Almost surely, 2^12402434171 is an apocalyptic number.

12402434171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12402434171 is an equidigital number, since it uses as much as digits as its factorization.

12402434171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

Adding to 12402434171 its reverse (17143420421), we get a palindrome (29545854592).

The spelling of 12402434171 in words is "twelve billion, four hundred two million, four hundred thirty-four thousand, one hundred seventy-one".