12102839 has 4 divisors (see below), whose sum is σ = 13831824. Its totient is φ = 10373856.

The previous prime is 12102833. The next prime is 12102841. The reversal of 12102839 is 93820121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93820121 = 307 ⋅305603.

It is a cyclic number.

It is not a de Polignac number, because 12102839 - 2¹² = 12098743 is a prime.

It is a Duffinian number.

It is a plaindrome in base 6.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864482 + ... + 864495.

It is an arithmetic number, because the mean of its divisors is an integer number (3457956).

Almost surely, 2^12102839 is an apocalyptic number.

12102839 is a deficient number, since it is larger than the sum of its proper divisors (1728985).

12102839 is an equidigital number, since it uses as much as digits as its factorization.

12102839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728984.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 12102839 is about 3478.9134798095. The cubic root of 12102839 is about 229.5949961375.

The spelling of 12102839 in words is "twelve million, one hundred two thousand, eight hundred thirty-nine".