1182145 has 4 divisors (see below), whose sum is σ = 1418580. Its totient is φ = 945712.

The previous prime is 1182143. The next prime is 1182157. The reversal of 1182145 is 5412811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 400689 + 781456 = 633^2 + 884^2 .

It is a cyclic number.

It is not a de Polignac number, because 1182145 - 2¹ = 1182143 is a prime.

1182145 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1182143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118210 + ... + 118219.

It is an arithmetic number, because the mean of its divisors is an integer number (354645).

2^1182145 is an apocalyptic number.

It is an amenable number.

1182145 is a deficient number, since it is larger than the sum of its proper divisors (236435).

1182145 is an equidigital number, since it uses as much as digits as its factorization.

1182145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236434.

The product of its digits is 320, while the sum is 22.

The square root of 1182145 is about 1087.2649171200. The cubic root of 1182145 is about 105.7361719442.

Adding to 1182145 its reverse (5412811), we get a palindrome (6594956).

The spelling of 1182145 in words is "one million, one hundred eighty-two thousand, one hundred forty-five".