12400445240042 has 16 divisors (see below), whose sum is σ = 19200826973952. Its totient is φ = 6000172448160.

The previous prime is 12400445240033. The next prime is 12400445240047. The reversal of 12400445240042 is 24004254400421.

It is a junction number, because it is equal to n+sod(n) for n = 12400445239990 and 12400445240008.

It is not an unprimeable number, because it can be changed into a prime (12400445240047) 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, 9077678 + ... + 10353990.

It is an arithmetic number, because the mean of its divisors is an integer number (1200051685872).

Almost surely, 2^{12400445240042} is an apocalyptic number.

12400445240042 is a deficient number, since it is larger than the sum of its proper divisors (6800381733910).

12400445240042 is a wasteful number, since it uses less digits than its factorization.

12400445240042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433053.

The product of its (nonzero) digits is 40960, while the sum is 32.

Adding to 12400445240042 its reverse (24004254400421), we get a palindrome (36404699640463).

The spelling of 12400445240042 in words is "twelve trillion, four hundred billion, four hundred forty-five million, two hundred forty thousand, forty-two".