12138355 has 8 divisors (see below), whose sum is σ = 14584752. Its totient is φ = 9698208.

The previous prime is 12138353. The next prime is 12138383. The reversal of 12138355 is 55383121.

12138355 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 12138355 - 2¹ = 12138353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12138353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6597 + ... + 8233.

It is an arithmetic number, because the mean of its divisors is an integer number (1823094).

Almost surely, 2^12138355 is an apocalyptic number.

12138355 is a deficient number, since it is larger than the sum of its proper divisors (2446397).

12138355 is a wasteful number, since it uses less digits than its factorization.

12138355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3125.

The product of its digits is 3600, while the sum is 28.

The square root of 12138355 is about 3484.0142077781. The cubic root of 12138355 is about 229.8193603701.

The spelling of 12138355 in words is "twelve million, one hundred thirty-eight thousand, three hundred fifty-five".