12401023 has 4 divisors (see below), whose sum is σ = 12801088. Its totient is φ = 12000960.

The previous prime is 12400987. The next prime is 12401027. The reversal of 12401023 is 32010421.

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

It is a cyclic number.

It is not a de Polignac number, because 12401023 - 2⁹ = 12400511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12400994 and 12401012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12401027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199986 + ... + 200047.

It is an arithmetic number, because the mean of its divisors is an integer number (3200272).

Almost surely, 2^12401023 is an apocalyptic number.

12401023 is a deficient number, since it is larger than the sum of its proper divisors (400065).

12401023 is an equidigital number, since it uses as much as digits as its factorization.

12401023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400064.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12401023 is about 3521.5086255751. The cubic root of 12401023 is about 231.4652703975.

Adding to 12401023 its reverse (32010421), we get a palindrome (44411444).

The spelling of 12401023 in words is "twelve million, four hundred one thousand, twenty-three".