12457103 has 4 divisors (see below), whose sum is σ = 13112760. Its totient is φ = 11801448.

The previous prime is 12457097. The next prime is 12457111. The reversal of 12457103 is 30175421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30175421 = 383 ⋅78787.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12457103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12417103) 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 in 3 ways as a sum of consecutive naturals, for example, 327800 + ... + 327837.

It is an arithmetic number, because the mean of its divisors is an integer number (3278190).

Almost surely, 2^12457103 is an apocalyptic number.

12457103 is a deficient number, since it is larger than the sum of its proper divisors (655657).

12457103 is an equidigital number, since it uses as much as digits as its factorization.

12457103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655656.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 12457103 is about 3529.4621403268. The cubic root of 12457103 is about 231.8136570972.

The spelling of 12457103 in words is "twelve million, four hundred fifty-seven thousand, one hundred three".