1170003 has 4 divisors (see below), whose sum is σ = 1560008. Its totient is φ = 780000.

The previous prime is 1169939. The next prime is 1170007. The reversal of 1170003 is 3000711.

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

It is not a de Polignac number, because 1170003 - 2⁶ = 1169939 is a prime.

It is a D-number.

It is a Duffinian number.

1170003 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1170007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194998 + ... + 195003.

It is an arithmetic number, because the mean of its divisors is an integer number (390002).

2^1170003 is an apocalyptic number.

1170003 is a deficient number, since it is larger than the sum of its proper divisors (390005).

1170003 is an equidigital number, since it uses as much as digits as its factorization.

1170003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390004.

The product of its (nonzero) digits is 21, while the sum is 12.

The square root of 1170003 is about 1081.6667693888. Note that the first 3 decimals coincide. The cubic root of 1170003 is about 105.3729143651.

Adding to 1170003 its reverse (3000711), we get a palindrome (4170714).

The spelling of 1170003 in words is "one million, one hundred seventy thousand, three".