12419857 has 4 divisors (see below), whose sum is σ = 12605296. Its totient is φ = 12234420.

The previous prime is 12419837. The next prime is 12419867. The reversal of 12419857 is 75891421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12419857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12419807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92619 + ... + 92752.

It is an arithmetic number, because the mean of its divisors is an integer number (3151324).

Almost surely, 2^12419857 is an apocalyptic number.

It is an amenable number.

12419857 is a deficient number, since it is larger than the sum of its proper divisors (185439).

12419857 is an equidigital number, since it uses as much as digits as its factorization.

12419857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185438.

The product of its digits is 20160, while the sum is 37.

The square root of 12419857 is about 3524.1817490022. The cubic root of 12419857 is about 231.5823900849.

The spelling of 12419857 in words is "twelve million, four hundred nineteen thousand, eight hundred fifty-seven".