111816842 has 4 divisors (see below), whose sum is σ = 167725266. Its totient is φ = 55908420.

The previous prime is 111816839. The next prime is 111816851. The reversal of 111816842 is 248618111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 93915481 + 17901361 = 9691^2 + 4231^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111816799 and 111816808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27954209 + ... + 27954212.

Almost surely, 2^111816842 is an apocalyptic number.

111816842 is a deficient number, since it is larger than the sum of its proper divisors (55908424).

111816842 is an equidigital number, since it uses as much as digits as its factorization.

111816842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55908423.

The product of its digits is 3072, while the sum is 32.

The square root of 111816842 is about 10574.3483014321. The cubic root of 111816842 is about 481.7655494489.

The spelling of 111816842 in words is "one hundred eleven million, eight hundred sixteen thousand, eight hundred forty-two".