111545442 has 24 divisors (see below), whose sum is σ = 242746140. Its totient is φ = 37018080.

The previous prime is 111545411. The next prime is 111545503. The reversal of 111545442 is 244545111.

111545442 is a `hidden beast` number, since 1 + 115 + 4 + 544 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 111323601 + 221841 = 10551^2 + 471^2 .

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 in 11 ways as a sum of consecutive naturals, for example, 9409 + ... + 17652.

Almost surely, 2^111545442 is an apocalyptic number.

111545442 is an abundant number, since it is smaller than the sum of its proper divisors (131200698).

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

111545442 is a wasteful number, since it uses less digits than its factorization.

111545442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27298 (or 27295 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 111545442 is about 10561.5075628435. The cubic root of 111545442 is about 481.3754558627.

The spelling of 111545442 in words is "one hundred eleven million, five hundred forty-five thousand, four hundred forty-two".