12420111242 has 192 divisors, whose sum is σ = 25530163200. Its totient is φ = 4472657280.

The previous prime is 12420111227. The next prime is 12420111283. The reversal of 12420111242 is 24211102421.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 116075753 + ... + 116075859.

It is an arithmetic number, because the mean of its divisors is an integer number (132969600).

Almost surely, 2^12420111242 is an apocalyptic number.

12420111242 is an abundant number, since it is smaller than the sum of its proper divisors (13110051958).

12420111242 is a wasteful number, since it uses less digits than its factorization.

12420111242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12420111242 its reverse (24211102421), we get a palindrome (36631213663).

The spelling of 12420111242 in words is "twelve billion, four hundred twenty million, one hundred eleven thousand, two hundred forty-two".