12139748 has 24 divisors (see below), whose sum is σ = 22121400. Its totient is φ = 5822208.

The previous prime is 12139741. The next prime is 12139753. The reversal of 12139748 is 84793121.

It can be written as a sum of positive squares in 4 ways, for example, as 7086244 + 5053504 = 2662^2 + 2248^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12139741) 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, 26336 + ... + 26792.

It is an arithmetic number, because the mean of its divisors is an integer number (921725).

Almost surely, 2^12139748 is an apocalyptic number.

It is an amenable number.

12139748 is a deficient number, since it is larger than the sum of its proper divisors (9981652).

12139748 is a wasteful number, since it uses less digits than its factorization.

12139748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 717 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 12139748 is about 3484.2141151198. The cubic root of 12139748 is about 229.8281514054.

The spelling of 12139748 in words is "twelve million, one hundred thirty-nine thousand, seven hundred forty-eight".