12142143404440 has 32 divisors (see below), whose sum is σ = 31222654469280. Its totient is φ = 4163020595712.

The previous prime is 12142143404411. The next prime is 12142143404449. The reversal of 12142143404440 is 4440434124121.

It is a junction number, because it is equal to n+sod(n) for n = 12142143404396 and 12142143404405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142143404449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21682398657 + ... + 21682399216.

It is an arithmetic number, because the mean of its divisors is an integer number (975707952165).

Almost surely, 2^{12142143404440} is an apocalyptic number.

12142143404440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12142143404440 is an abundant number, since it is smaller than the sum of its proper divisors (19080511064840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12142143404440 is a wasteful number, since it uses less digits than its factorization.

12142143404440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43364797891 (or 43364797887 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 34.

Adding to 12142143404440 its reverse (4440434124121), we get a palindrome (16582577528561).

The spelling of 12142143404440 in words is "twelve trillion, one hundred forty-two billion, one hundred forty-three million, four hundred four thousand, four hundred forty".