12400203111442 has 16 divisors (see below), whose sum is σ = 19203843838464. Its totient is φ = 5998995360000.

The previous prime is 12400203111427. The next prime is 12400203111451. The reversal of 12400203111442 is 24411130200421.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18041934 + ... + 18716617.

It is an arithmetic number, because the mean of its divisors is an integer number (1200240239904).

Almost surely, 2^{12400203111442} is an apocalyptic number.

12400203111442 is a deficient number, since it is larger than the sum of its proper divisors (6803640727022).

12400203111442 is a wasteful number, since it uses less digits than its factorization.

12400203111442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36764025.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 12400203111442 its reverse (24411130200421), we get a palindrome (36811333311863).

The spelling of 12400203111442 in words is "twelve trillion, four hundred billion, two hundred three million, one hundred eleven thousand, four hundred forty-two".