12139572 has 12 divisors (see below), whose sum is σ = 28325696. Its totient is φ = 4046520.

The previous prime is 12139559. The next prime is 12139573. The reversal of 12139572 is 27593121.

12139572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12139573) 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, 505804 + ... + 505827.

Almost surely, 2^12139572 is an apocalyptic number.

12139572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12139572 is an abundant number, since it is smaller than the sum of its proper divisors (16186124).

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

12139572 is a wasteful number, since it uses less digits than its factorization.

12139572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011638 (or 1011636 counting only the distinct ones).

The product of its digits is 3780, while the sum is 30.

The square root of 12139572 is about 3484.1888582567. The cubic root of 12139572 is about 229.8270407302.

It can be divided in two parts, 121 and 39572, that added together give a palindrome (39693).

The spelling of 12139572 in words is "twelve million, one hundred thirty-nine thousand, five hundred seventy-two".