1123605105 has 32 divisors (see below), whose sum is σ = 2059948800. Its totient is φ = 512308992.

The previous prime is 1123605031. The next prime is 1123605167. The reversal of 1123605105 is 5015063211.

1123605105 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1123605105 - 2¹³ = 1123596913 is a prime.

It is a super-2 number, since 2×1123605105² = 2524976863964122050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27091 + ... + 54599.

It is an arithmetic number, because the mean of its divisors is an integer number (64373400).

Almost surely, 2^1123605105 is an apocalyptic number.

1123605105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1123605105 is a deficient number, since it is larger than the sum of its proper divisors (936343695).

1123605105 is a wasteful number, since it uses less digits than its factorization.

1123605105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27913.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1123605105 is about 33520.2193459410. The cubic root of 1123605105 is about 1039.6118821116.

Adding to 1123605105 its reverse (5015063211), we get a palindrome (6138668316).

The spelling of 1123605105 in words is "one billion, one hundred twenty-three million, six hundred five thousand, one hundred five".