12023905 has 8 divisors (see below), whose sum is σ = 14673600. Its totient is φ = 9455856.

The previous prime is 12023881. The next prime is 12023909. The reversal of 12023905 is 50932021.

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 12023905 - 2⁵ = 12023873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12023909) 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, 20085 + ... + 20674.

It is an arithmetic number, because the mean of its divisors is an integer number (1834200).

Almost surely, 2^12023905 is an apocalyptic number.

It is an amenable number.

12023905 is a deficient number, since it is larger than the sum of its proper divisors (2649695).

12023905 is an equidigital number, since it uses as much as digits as its factorization.

12023905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40823.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 12023905 is about 3467.5502880276. The cubic root of 12023905 is about 229.0947720847.

Adding to 12023905 its reverse (50932021), we get a palindrome (62955926).

It can be divided in two parts, 120 and 23905, that added together give a square (24025 = 155²).

The spelling of 12023905 in words is "twelve million, twenty-three thousand, nine hundred five".