12400143243400 has 48 divisors (see below), whose sum is σ = 31451272413840. Its totient is φ = 4509142996800.

The previous prime is 12400143243391. The next prime is 12400143243431. The reversal of 12400143243400 is 434234100421.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2818212174 + ... + 2818216573.

It is an arithmetic number, because the mean of its divisors is an integer number (655234841955).

Almost surely, 2^{12400143243400} is an apocalyptic number.

12400143243400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12400143243400 is an abundant number, since it is smaller than the sum of its proper divisors (19051129170440).

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

12400143243400 is a wasteful number, since it uses less digits than its factorization.

12400143243400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5636428774 (or 5636428765 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 12400143243400 its reverse (434234100421), we get a palindrome (12834377343821).

The spelling of 12400143243400 in words is "twelve trillion, four hundred billion, one hundred forty-three million, two hundred forty-three thousand, four hundred".