12402443023 has 4 divisors (see below), whose sum is σ = 12410359360. Its totient is φ = 12394526688.

The previous prime is 12402443003. The next prime is 12402443057. The reversal of 12402443023 is 32034420421.

It is a happy number.

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 12402443023 - 2⁵ = 12402442991 is a prime.

It is a super-2 number, since 2×12402443023² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12402443003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3955818 + ... + 3958951.

It is an arithmetic number, because the mean of its divisors is an integer number (3102589840).

Almost surely, 2^12402443023 is an apocalyptic number.

12402443023 is a deficient number, since it is larger than the sum of its proper divisors (7916337).

12402443023 is an equidigital number, since it uses as much as digits as its factorization.

12402443023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7916336.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 12402443023 its reverse (32034420421), we get a palindrome (44436863444).

The spelling of 12402443023 in words is "twelve billion, four hundred two million, four hundred forty-three thousand, twenty-three".