2003123 has 8 divisors (see below), whose sum is σ = 2060640. Its totient is φ = 1946560.

The previous prime is 2003119. The next prime is 2003149. The reversal of 2003123 is 3213002.

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 2003123 - 2² = 2003119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003153) 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 7 ways as a sum of consecutive naturals, for example, 6161 + ... + 6477.

It is an arithmetic number, because the mean of its divisors is an integer number (257580).

2^2003123 is an apocalyptic number.

2003123 is a deficient number, since it is larger than the sum of its proper divisors (57517).

2003123 is an equidigital number, since it uses as much as digits as its factorization.

2003123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 2003123 is about 1415.3172789166. The cubic root of 2003123 is about 126.0576497759.

Adding to 2003123 its reverse (3213002), we get a palindrome (5216125).

The spelling of 2003123 in words is "two million, three thousand, one hundred twenty-three".