12103245 has 72 divisors (see below), whose sum is σ = 26676000. Its totient is φ = 5019840.

The previous prime is 12103243. The next prime is 12103249. The reversal of 12103245 is 54230121.

It is not a de Polignac number, because 12103245 - 2¹ = 12103243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103243) 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 71 ways as a sum of consecutive naturals, for example, 24006 + ... + 24504.

It is an arithmetic number, because the mean of its divisors is an integer number (370500).

Almost surely, 2^12103245 is an apocalyptic number.

12103245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12103245 is an abundant number, since it is smaller than the sum of its proper divisors (14572755).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12103245 is a wasteful number, since it uses less digits than its factorization.

12103245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12103245 is about 3478.9718308719. The cubic root of 12103245 is about 229.5975634284.

Adding to 12103245 its reverse (54230121), we get a palindrome (66333366).

The spelling of 12103245 in words is "twelve million, one hundred three thousand, two hundred forty-five".