12102739 has 4 divisors (see below), whose sum is σ = 13203000. Its totient is φ = 11002480.

The previous prime is 12102733. The next prime is 12102751. The reversal of 12102739 is 93720121.

12102739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93720121 = 11 ⋅8520011.

It is a cyclic number.

It is not a de Polignac number, because 12102739 - 2¹⁷ = 11971667 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (12102733) 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, 550114 + ... + 550135.

It is an arithmetic number, because the mean of its divisors is an integer number (3300750).

Almost surely, 2^12102739 is an apocalyptic number.

12102739 is a deficient number, since it is larger than the sum of its proper divisors (1100261).

12102739 is a wasteful number, since it uses less digits than its factorization.

12102739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100260.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 12102739 is about 3478.8991074764. The cubic root of 12102739 is about 229.5943637910.

The spelling of 12102739 in words is "twelve million, one hundred two thousand, seven hundred thirty-nine".