111120045 has 32 divisors (see below), whose sum is σ = 183060864. Its totient is φ = 57523200.

The previous prime is 111120043. The next prime is 111120059. The reversal of 111120045 is 540021111.

It is a happy number.

It is not a de Polignac number, because 111120045 - 2¹ = 111120043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172494 + ... + 173136.

It is an arithmetic number, because the mean of its divisors is an integer number (5720652).

Almost surely, 2^111120045 is an apocalyptic number.

111120045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111120045 is a deficient number, since it is larger than the sum of its proper divisors (71940819).

111120045 is a wasteful number, since it uses less digits than its factorization.

111120045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 111120045 is about 10541.3492969354. The cubic root of 111120045 is about 480.7627413212.

Adding to 111120045 its reverse (540021111), we get a palindrome (651141156).

The spelling of 111120045 in words is "one hundred eleven million, one hundred twenty thousand, forty-five".