12138607 has 4 divisors (see below), whose sum is σ = 13072360. Its totient is φ = 11204856.

The previous prime is 12138593. The next prime is 12138613. The reversal of 12138607 is 70683121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12138607 - 2¹⁹ = 11614319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12138647) 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, 466857 + ... + 466882.

It is an arithmetic number, because the mean of its divisors is an integer number (3268090).

Almost surely, 2^12138607 is an apocalyptic number.

12138607 is a deficient number, since it is larger than the sum of its proper divisors (933753).

12138607 is an equidigital number, since it uses as much as digits as its factorization.

12138607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933752.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 12138607 is about 3484.0503727702. The cubic root of 12138607 is about 229.8209507579.

The spelling of 12138607 in words is "twelve million, one hundred thirty-eight thousand, six hundred seven".