105111245 has 4 divisors (see below), whose sum is σ = 126133500. Its totient is φ = 84088992.

The previous prime is 105111241. The next prime is 105111247. The reversal of 105111245 is 542111501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542111501 = 2719 ⋅199379.

It can be written as a sum of positive squares in 2 ways, for example, as 16957924 + 88153321 = 4118^2 + 9389^2 .

It is a cyclic number.

It is not a de Polignac number, because 105111245 - 2² = 105111241 is a prime.

It is a super-2 number, since 2×105111245² = 22096747650900050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105111241) 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, 10511120 + ... + 10511129.

It is an arithmetic number, because the mean of its divisors is an integer number (31533375).

Almost surely, 2^105111245 is an apocalyptic number.

It is an amenable number.

105111245 is a deficient number, since it is larger than the sum of its proper divisors (21022255).

105111245 is an equidigital number, since it uses as much as digits as its factorization.

105111245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21022254.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 105111245 is about 10252.3775291393. The cubic root of 105111245 is about 471.9359487082.

Adding to 105111245 its reverse (542111501), we get a palindrome (647222746).

The spelling of 105111245 in words is "one hundred five million, one hundred eleven thousand, two hundred forty-five".