112745 has 4 divisors (see below), whose sum is σ = 135300. Its totient is φ = 90192.

The previous prime is 112741. The next prime is 112757. The reversal of 112745 is 547211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 547211 = 7 ⋅78173.

It can be written as a sum of positive squares in 2 ways, for example, as 85849 + 26896 = 293^2 + 164^2 .

It is a cyclic number.

It is not a de Polignac number, because 112745 - 2² = 112741 is a prime.

It is a super-2 number, since 2×112745² = 25422870050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (112741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11270 + ... + 11279.

It is an arithmetic number, because the mean of its divisors is an integer number (33825).

2¹¹²⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

112745 is a deficient number, since it is larger than the sum of its proper divisors (22555).

112745 is an equidigital number, since it uses as much as digits as its factorization.

112745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22554.

The product of its digits is 280, while the sum is 20.

The square root of 112745 is about 335.7752224331. The cubic root of 112745 is about 48.3094875107.

Adding to 112745 its reverse (547211), we get a palindrome (659956).

The spelling of 112745 in words is "one hundred twelve thousand, seven hundred forty-five".