12258139 has 16 divisors (see below), whose sum is σ = 13638240. Its totient is φ = 10967040.

The previous prime is 12258131. The next prime is 12258151. The reversal of 12258139 is 93185221.

It is not a de Polignac number, because 12258139 - 2³ = 12258131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12258139.

It is not an unprimeable number, because it can be changed into a prime (12258131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29767 + ... + 30175.

It is an arithmetic number, because the mean of its divisors is an integer number (852390).

Almost surely, 2^12258139 is an apocalyptic number.

12258139 is a deficient number, since it is larger than the sum of its proper divisors (1380101).

12258139 is a wasteful number, since it uses less digits than its factorization.

12258139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510.

The product of its digits is 4320, while the sum is 31.

The square root of 12258139 is about 3501.1625212206. The cubic root of 12258139 is about 230.5728568254.

The spelling of 12258139 in words is "twelve million, two hundred fifty-eight thousand, one hundred thirty-nine".