12139952 has 40 divisors (see below), whose sum is σ = 26784000. Its totient is φ = 5276480.

The previous prime is 12139943. The next prime is 12139961. The reversal of 12139952 is 25993121.

It is an interprime number because it is at equal distance from previous prime (12139943) and next prime (12139961).

It is an unprimeable number.

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, 2549 + ... + 5547.

It is an arithmetic number, because the mean of its divisors is an integer number (669600).

Almost surely, 2^12139952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12139952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13392000).

12139952 is an abundant number, since it is smaller than the sum of its proper divisors (14644048).

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

12139952 is a wasteful number, since it uses less digits than its factorization.

12139952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3041 (or 3035 counting only the distinct ones).

The product of its digits is 4860, while the sum is 32.

The square root of 12139952 is about 3484.2433898911. The cubic root of 12139952 is about 229.8294387655.

The spelling of 12139952 in words is "twelve million, one hundred thirty-nine thousand, nine hundred fifty-two".