12002003 has 8 divisors (see below), whose sum is σ = 13103328. Its totient is φ = 10926144.

The previous prime is 12001999. The next prime is 12002059. The reversal of 12002003 is 30020021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12002003 - 2² = 12001999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12002093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5375 + ... + 7272.

It is an arithmetic number, because the mean of its divisors is an integer number (1637916).

Almost surely, 2^12002003 is an apocalyptic number.

12002003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12002003 is a deficient number, since it is larger than the sum of its proper divisors (1101325).

12002003 is a wasteful number, since it uses less digits than its factorization.

12002003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12733.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 12002003 is about 3464.3907112218. The cubic root of 12002003 is about 228.9555859277.

Adding to 12002003 its reverse (30020021), we get a palindrome (42022024).

The spelling of 12002003 in words is "twelve million, two thousand, three".