12042103 has 4 divisors (see below), whose sum is σ = 12750480. Its totient is φ = 11333728.

The previous prime is 12042091. The next prime is 12042109. The reversal of 12042103 is 30124021.

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 12042103 - 2²¹ = 9944951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12042109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354163 + ... + 354196.

It is an arithmetic number, because the mean of its divisors is an integer number (3187620).

Almost surely, 2^12042103 is an apocalyptic number.

12042103 is a deficient number, since it is larger than the sum of its proper divisors (708377).

12042103 is an equidigital number, since it uses as much as digits as its factorization.

12042103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708376.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12042103 is about 3470.1733386100. The cubic root of 12042103 is about 229.2102909936.

Adding to 12042103 its reverse (30124021), we get a palindrome (42166124).

The spelling of 12042103 in words is "twelve million, forty-two thousand, one hundred three".