12840103 has 2 divisors, whose sum is σ = 12840104. Its totient is φ = 12840102.

The previous prime is 12840089. The next prime is 12840109. The reversal of 12840103 is 30104821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12840103 - 2¹³ = 12831911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12840109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6420051 + 6420052.

It is an arithmetic number, because the mean of its divisors is an integer number (6420052).

Almost surely, 2^12840103 is an apocalyptic number.

12840103 is a deficient number, since it is larger than the sum of its proper divisors (1).

12840103 is an equidigital number, since it uses as much as digits as its factorization.

12840103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 12840103 is about 3583.3089456534. The cubic root of 12840103 is about 234.1654599607.

Adding to 12840103 its reverse (30104821), we get a palindrome (42944924).

The spelling of 12840103 in words is "twelve million, eight hundred forty thousand, one hundred three".