12123603 has 12 divisors (see below), whose sum is σ = 17885088. Its totient is φ = 7910160.

The previous prime is 12123589. The next prime is 12123607. The reversal of 12123603 is 30632121.

It is not a de Polignac number, because 12123603 - 2⁵ = 12123571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12123607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13908 + ... + 14753.

It is an arithmetic number, because the mean of its divisors is an integer number (1490424).

Almost surely, 2^12123603 is an apocalyptic number.

12123603 is a deficient number, since it is larger than the sum of its proper divisors (5761485).

12123603 is a wasteful number, since it uses less digits than its factorization.

12123603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28714 (or 28711 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 12123603 is about 3481.8964660081. The cubic root of 12123603 is about 229.7262211826.

Adding to 12123603 its reverse (30632121), we get a palindrome (42755724).

The spelling of 12123603 in words is "twelve million, one hundred twenty-three thousand, six hundred three".