12540503 has 2 divisors, whose sum is σ = 12540504. Its totient is φ = 12540502.

The previous prime is 12540491. The next prime is 12540529. The reversal of 12540503 is 30504521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12540503 - 2¹⁰ = 12539479 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12540403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6270251 + 6270252.

It is an arithmetic number, because the mean of its divisors is an integer number (6270252).

Almost surely, 2^12540503 is an apocalyptic number.

12540503 is a deficient number, since it is larger than the sum of its proper divisors (1).

12540503 is an equidigital number, since it uses as much as digits as its factorization.

12540503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 12540503 is about 3541.2572626117. The cubic root of 12540503 is about 232.3298357928.

The spelling of 12540503 in words is "twelve million, five hundred forty thousand, five hundred three".