12103139 has 2 divisors, whose sum is σ = 12103140. Its totient is φ = 12103138.

The previous prime is 12103127. The next prime is 12103141. The reversal of 12103139 is 93130121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12103139 - 2⁴ = 12103123 is a prime.

Together with 12103141, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12103139.

It is not a weakly prime, because it can be changed into another prime (12103109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051569 + 6051570.

It is an arithmetic number, because the mean of its divisors is an integer number (6051570).

Almost surely, 2^12103139 is an apocalyptic number.

12103139 is a deficient number, since it is larger than the sum of its proper divisors (1).

12103139 is an equidigital number, since it uses as much as digits as its factorization.

12103139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 12103139 is about 3478.9565964524. The cubic root of 12103139 is about 229.5968931560.

The spelling of 12103139 in words is "twelve million, one hundred three thousand, one hundred thirty-nine".