1100105 has 4 divisors (see below), whose sum is σ = 1320132. Its totient is φ = 880080.

The previous prime is 1100101. The next prime is 1100123. The reversal of 1100105 is 5010011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5010011 = 29 ⋅172759.

It can be written as a sum of positive squares in 2 ways, for example, as 633616 + 466489 = 796^2 + 683^2 .

It is not a de Polignac number, because 1100105 - 2² = 1100101 is a prime.

It is a super-2 number, since 2×1100105² = 2420462022050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100092 and 1100101.

It is not an unprimeable number, because it can be changed into a prime (1100101) 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, 110006 + ... + 110015.

It is an arithmetic number, because the mean of its divisors is an integer number (330033).

2^1100105 is an apocalyptic number.

It is an amenable number.

1100105 is a deficient number, since it is larger than the sum of its proper divisors (220027).

1100105 is an equidigital number, since it uses as much as digits as its factorization.

1100105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220026.

The product of its (nonzero) digits is 5, while the sum is 8.

The square root of 1100105 is about 1048.8589037616. The cubic root of 1100105 is about 103.2312959688.

Adding to 1100105 its reverse (5010011), we get a palindrome (6110116).

The spelling of 1100105 in words is "one million, one hundred thousand, one hundred five".