111145752242 has 90 divisors (see below), whose sum is σ = 207339915933. Its totient is φ = 44673483456.

The previous prime is 111145752229. The next prime is 111145752271. The reversal of 111145752242 is 242257541111.

It can be written as a sum of positive squares in 2 ways, for example, as 101723361481 + 9422390761 = 318941^2 + 97069^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=235739.

It is a Duffinian number.

It is an unprimeable number.

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 44 ways as a sum of consecutive naturals, for example, 392741033 + ... + 392741315.

Almost surely, 2^111145752242 is an apocalyptic number.

111145752242 is a deficient number, since it is larger than the sum of its proper divisors (96194163691).

111145752242 is an frugal number, since it uses more digits than its factorization.

111145752242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630 (or 309 counting only the distinct ones).

The product of its digits is 22400, while the sum is 35.

The spelling of 111145752242 in words is "one hundred eleven billion, one hundred forty-five million, seven hundred fifty-two thousand, two hundred forty-two".