12270239 has 4 divisors (see below), whose sum is σ = 12382920. Its totient is φ = 12157560.

The previous prime is 12270233. The next prime is 12270241. The reversal of 12270239 is 93207221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12270239 - 2²⁰ = 11221663 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 (12270233) 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, 56177 + ... + 56394.

It is an arithmetic number, because the mean of its divisors is an integer number (3095730).

Almost surely, 2^12270239 is an apocalyptic number.

12270239 is a deficient number, since it is larger than the sum of its proper divisors (112681).

12270239 is a wasteful number, since it uses less digits than its factorization.

12270239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112680.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 12270239 is about 3502.8900924808. The cubic root of 12270239 is about 230.6486979759.

The spelling of 12270239 in words is "twelve million, two hundred seventy thousand, two hundred thirty-nine".