12138337 has 8 divisors (see below), whose sum is σ = 12530952. Its totient is φ = 11750400.

The previous prime is 12138317. The next prime is 12138353. The reversal of 12138337 is 73383121.

It can be written as a sum of positive squares in 4 ways, for example, as 571536 + 11566801 = 756^2 + 3401^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12138337 - 2⁷ = 12138209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12138317) 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, 4537 + ... + 6697.

It is an arithmetic number, because the mean of its divisors is an integer number (1566369).

Almost surely, 2^12138337 is an apocalyptic number.

It is an amenable number.

12138337 is a deficient number, since it is larger than the sum of its proper divisors (392615).

12138337 is a wasteful number, since it uses less digits than its factorization.

12138337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339.

The product of its digits is 3024, while the sum is 28.

The square root of 12138337 is about 3484.0116245501. The cubic root of 12138337 is about 229.8192467701.

The spelling of 12138337 in words is "twelve million, one hundred thirty-eight thousand, three hundred thirty-seven".