1185105 has 24 divisors (see below), whose sum is σ = 1984896. Its totient is φ = 603520.

The previous prime is 1185103. The next prime is 1185109. The reversal of 1185105 is 5015811.

It is not a de Polignac number, because 1185105 - 2¹ = 1185103 is a prime.

It is a super-2 number, since 2×1185105² = 2808947722050, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1185103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25192 + ... + 25238.

It is an arithmetic number, because the mean of its divisors is an integer number (82704).

2^1185105 is an apocalyptic number.

1185105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1185105 is a deficient number, since it is larger than the sum of its proper divisors (799791).

1185105 is an equidigital number, since it uses as much as digits as its factorization.

1185105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 21.

The square root of 1185105 is about 1088.6252798828. The cubic root of 1185105 is about 105.8243501307.

The spelling of 1185105 in words is "one million, one hundred eighty-five thousand, one hundred five".