12154903 has 2 divisors, whose sum is σ = 12154904. Its totient is φ = 12154902.

The previous prime is 12154871. The next prime is 12154913. The reversal of 12154903 is 30945121.

It is a strong prime.

It is an emirp because it is prime and its reverse (30945121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12154903 - 2⁵ = 12154871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12154913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6077451 + 6077452.

It is an arithmetic number, because the mean of its divisors is an integer number (6077452).

Almost surely, 2^12154903 is an apocalyptic number.

12154903 is a deficient number, since it is larger than the sum of its proper divisors (1).

12154903 is an equidigital number, since it uses as much as digits as its factorization.

12154903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 12154903 is about 3486.3882457351. The cubic root of 12154903 is about 229.9237491408.

The spelling of 12154903 in words is "twelve million, one hundred fifty-four thousand, nine hundred three".