12139320 has 32 divisors (see below), whose sum is σ = 36418320. Its totient is φ = 3237120.

The previous prime is 12139319. The next prime is 12139327. The reversal of 12139320 is 2393121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12139327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50461 + ... + 50700.

Almost surely, 2^12139320 is an apocalyptic number.

12139320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12139320 is an abundant number, since it is smaller than the sum of its proper divisors (24279000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12139320 is a wasteful number, since it uses less digits than its factorization.

12139320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101175 (or 101171 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 12139320 is about 3484.1526947021. The cubic root of 12139320 is about 229.8254504266.

The spelling of 12139320 in words is "twelve million, one hundred thirty-nine thousand, three hundred twenty".