111245 has 8 divisors (see below), whose sum is σ = 140640. Its totient is φ = 84240.

The previous prime is 111229. The next prime is 111253. The reversal of 111245 is 542111.

111245 = 13² + 14² + ... + 69².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111245 - 2⁴ = 111229 is a prime.

It is a plaindrome in base 10.

It is a nialpdrome in base 7 and base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491 + ... + 680.

It is an arithmetic number, because the mean of its divisors is an integer number (17580).

2¹¹¹²⁴⁵ is an apocalyptic number.

It is an amenable number.

111245 is a deficient number, since it is larger than the sum of its proper divisors (29395).

111245 is a wasteful number, since it uses less digits than its factorization.

111245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195.

The product of its digits is 40, while the sum is 14.

The square root of 111245 is about 333.5341062020. The cubic root of 111245 is about 48.0942880451.

Adding to 111245 its reverse (542111), we get a palindrome (653356).

It can be divided in two parts, 11 and 1245, that multiplied together give a triangular number (13695 = T₁₆₅).

The spelling of 111245 in words is "one hundred eleven thousand, two hundred forty-five".