12138023 has 2 divisors, whose sum is σ = 12138024. Its totient is φ = 12138022.

The previous prime is 12138001. The next prime is 12138029. The reversal of 12138023 is 32083121.

12138023 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12138023 - 2¹⁸ = 11875879 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 12137986 and 12138004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12138029) 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 as a sum of consecutive naturals, namely, 6069011 + 6069012.

It is an arithmetic number, because the mean of its divisors is an integer number (6069012).

Almost surely, 2^12138023 is an apocalyptic number.

12138023 is a deficient number, since it is larger than the sum of its proper divisors (1).

12138023 is an equidigital number, since it uses as much as digits as its factorization.

12138023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 12138023 is about 3483.9665612632. The cubic root of 12138023 is about 229.8172650635.

The spelling of 12138023 in words is "twelve million, one hundred thirty-eight thousand, twenty-three".