12138357 has 48 divisors (see below), whose sum is σ = 21603456. Its totient is φ = 5913600.

The previous prime is 12138353. The next prime is 12138383. The reversal of 12138357 is 75383121.

12138357 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12138357 - 2² = 12138353 is a prime.

It is a congruent 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 47 ways as a sum of consecutive naturals, for example, 43057 + ... + 43337.

It is an arithmetic number, because the mean of its divisors is an integer number (450072).

Almost surely, 2^12138357 is an apocalyptic number.

12138357 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12138357 is a deficient number, since it is larger than the sum of its proper divisors (9465099).

12138357 is a wasteful number, since it uses less digits than its factorization.

12138357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 319 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 12138357 is about 3484.0144948034. The cubic root of 12138357 is about 229.8193729923.

The spelling of 12138357 in words is "twelve million, one hundred thirty-eight thousand, three hundred fifty-seven".