1172003 has 4 divisors (see below), whose sum is σ = 1339440. Its totient is φ = 1004568.

The previous prime is 1171999. The next prime is 1172009. The reversal of 1172003 is 3002711.

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

It is a cyclic number.

It is not a de Polignac number, because 1172003 - 2² = 1171999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1172009) 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, 83708 + ... + 83721.

It is an arithmetic number, because the mean of its divisors is an integer number (334860).

2^1172003 is an apocalyptic number.

1172003 is a deficient number, since it is larger than the sum of its proper divisors (167437).

1172003 is an equidigital number, since it uses as much as digits as its factorization.

1172003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167436.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 1172003 is about 1082.5908737838. The cubic root of 1172003 is about 105.4329215787.

Adding to 1172003 its reverse (3002711), we get a palindrome (4174714).

The spelling of 1172003 in words is "one million, one hundred seventy-two thousand, three".