305122111242 has 16 divisors (see below), whose sum is σ = 657186085920. Its totient is φ = 93883726512.

The previous prime is 305122111241. The next prime is 305122111289. The reversal of 305122111242 is 242111221503.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (305122111241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1955910892 + ... + 1955911047.

It is an arithmetic number, because the mean of its divisors is an integer number (41074130370).

Almost surely, 2^305122111242 is an apocalyptic number.

305122111242 is an abundant number, since it is smaller than the sum of its proper divisors (352063974678).

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

305122111242 is a wasteful number, since it uses less digits than its factorization.

305122111242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911821957.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 305122111242 its reverse (242111221503), we get a palindrome (547233332745).

The spelling of 305122111242 in words is "three hundred five billion, one hundred twenty-two million, one hundred eleven thousand, two hundred forty-two".