12042389 has 4 divisors (see below), whose sum is σ = 12056940. Its totient is φ = 12027840.

The previous prime is 12042383. The next prime is 12042391. The reversal of 12042389 is 98324021.

12042389 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.

It can be written as a sum of positive squares in 2 ways, for example, as 5499025 + 6543364 = 2345^2 + 2558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12042389 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 (12042383) 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, 5954 + ... + 7715.

It is an arithmetic number, because the mean of its divisors is an integer number (3014235).

Almost surely, 2^12042389 is an apocalyptic number.

It is an amenable number.

12042389 is a deficient number, since it is larger than the sum of its proper divisors (14551).

12042389 is an equidigital number, since it uses as much as digits as its factorization.

12042389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14550.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 12042389 is about 3470.2145466815. The cubic root of 12042389 is about 229.2121055610.

The spelling of 12042389 in words is "twelve million, forty-two thousand, three hundred eighty-nine".