12040239 has 8 divisors (see below), whose sum is σ = 16070400. Its totient is φ = 8018456.

The previous prime is 12040213. The next prime is 12040253. The reversal of 12040239 is 93204021.

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

It is a cyclic number.

It is not a de Polignac number, because 12040239 - 2¹⁷ = 11909167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12040289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3112 + ... + 5810.

It is an arithmetic number, because the mean of its divisors is an integer number (2008800).

Almost surely, 2^12040239 is an apocalyptic number.

12040239 is a deficient number, since it is larger than the sum of its proper divisors (4030161).

12040239 is a wasteful number, since it uses less digits than its factorization.

12040239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4189.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 12040239 is about 3469.9047537360. The cubic root of 12040239 is about 229.1984638781.

The spelling of 12040239 in words is "twelve million, forty thousand, two hundred thirty-nine".