12402140262443 has 2 divisors, whose sum is σ = 12402140262444. Its totient is φ = 12402140262442.

The previous prime is 12402140262437. The next prime is 12402140262481. The reversal of 12402140262443 is 34426204120421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12402140262443 - 2³⁴ = 12384960393259 is a prime.

It is not a weakly prime, because it can be changed into another prime (12402140262493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6201070131221 + 6201070131222.

It is an arithmetic number, because the mean of its divisors is an integer number (6201070131222).

Almost surely, 2^{12402140262443} is an apocalyptic number.

12402140262443 is a deficient number, since it is larger than the sum of its proper divisors (1).

12402140262443 is an equidigital number, since it uses as much as digits as its factorization.

12402140262443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 35.

Adding to 12402140262443 its reverse (34426204120421), we get a palindrome (46828344382864).

The spelling of 12402140262443 in words is "twelve trillion, four hundred two billion, one hundred forty million, two hundred sixty-two thousand, four hundred forty-three".