12145103 has 2 divisors, whose sum is σ = 12145104. Its totient is φ = 12145102.

The previous prime is 12145099. The next prime is 12145151. The reversal of 12145103 is 30154121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12145103 - 2² = 12145099 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12145153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6072551 + 6072552.

It is an arithmetic number, because the mean of its divisors is an integer number (6072552).

Almost surely, 2^12145103 is an apocalyptic number.

12145103 is a deficient number, since it is larger than the sum of its proper divisors (1).

12145103 is an equidigital number, since it uses as much as digits as its factorization.

12145103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 12145103 is about 3484.9824963692. The cubic root of 12145103 is about 229.8619398287.

Adding to 12145103 its reverse (30154121), we get a palindrome (42299224).

The spelling of 12145103 in words is "twelve million, one hundred forty-five thousand, one hundred three".