12340420014423 has 4 divisors (see below), whose sum is σ = 16453893352568. Its totient is φ = 8226946676280.

The previous prime is 12340420014371. The next prime is 12340420014457. The reversal of 12340420014423 is 32441002404321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12340420014423 - 2¹³ = 12340420006231 is a prime.

It is a super-2 number, since 2×12340420014423² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12340420014623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2056736669068 + ... + 2056736669073.

It is an arithmetic number, because the mean of its divisors is an integer number (4113473338142).

Almost surely, 2^{12340420014423} is an apocalyptic number.

12340420014423 is a deficient number, since it is larger than the sum of its proper divisors (4113473338145).

12340420014423 is an equidigital number, since it uses as much as digits as its factorization.

12340420014423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4113473338144.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 12340420014423 its reverse (32441002404321), we get a palindrome (44781422418744).

The spelling of 12340420014423 in words is "twelve trillion, three hundred forty billion, four hundred twenty million, fourteen thousand, four hundred twenty-three".