12142140431 has 2 divisors, whose sum is σ = 12142140432. Its totient is φ = 12142140430.

The previous prime is 12142140407. The next prime is 12142140487. The reversal of 12142140431 is 13404124121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12142140431 - 2²⁶ = 12075031567 is a prime.

It is a super-2 number, since 2×12142140431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12142140397 and 12142140406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12142146431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6071070215 + 6071070216.

It is an arithmetic number, because the mean of its divisors is an integer number (6071070216).

Almost surely, 2^12142140431 is an apocalyptic number.

12142140431 is a deficient number, since it is larger than the sum of its proper divisors (1).

12142140431 is an equidigital number, since it uses as much as digits as its factorization.

12142140431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 12142140431 its reverse (13404124121), we get a palindrome (25546264552).

The spelling of 12142140431 in words is "twelve billion, one hundred forty-two million, one hundred forty thousand, four hundred thirty-one".