12401443 has 4 divisors (see below), whose sum is σ = 12415968. Its totient is φ = 12386920.

The previous prime is 12401437. The next prime is 12401447. The reversal of 12401443 is 34410421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34410421 = 113 ⋅304517.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12401443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12401443.

It is not an unprimeable number, because it can be changed into a prime (12401447) 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, 5896 + ... + 7717.

It is an arithmetic number, because the mean of its divisors is an integer number (3103992).

Almost surely, 2^12401443 is an apocalyptic number.

12401443 is a deficient number, since it is larger than the sum of its proper divisors (14525).

12401443 is an equidigital number, since it uses as much as digits as its factorization.

12401443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14524.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 12401443 is about 3521.5682586030. The cubic root of 12401443 is about 231.4678834699.

Adding to 12401443 its reverse (34410421), we get a palindrome (46811864).

The spelling of 12401443 in words is "twelve million, four hundred one thousand, four hundred forty-three".