12457243 has 8 divisors (see below), whose sum is σ = 13388112. Its totient is φ = 11548416.

The previous prime is 12457219. The next prime is 12457301. The reversal of 12457243 is 34275421.

12457243 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12457243 is a prime.

It is a super-2 number, since 2×12457243² = 310365806322098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12457213) 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 7 ways as a sum of consecutive naturals, for example, 4330 + ... + 6607.

It is an arithmetic number, because the mean of its divisors is an integer number (1673514).

Almost surely, 2^12457243 is an apocalyptic number.

12457243 is a deficient number, since it is larger than the sum of its proper divisors (930869).

12457243 is a wasteful number, since it uses less digits than its factorization.

12457243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11021.

The product of its digits is 6720, while the sum is 28.

The square root of 12457243 is about 3529.4819733213. The cubic root of 12457243 is about 231.8145255118.

The spelling of 12457243 in words is "twelve million, four hundred fifty-seven thousand, two hundred forty-three".