12401543 has 8 divisors (see below), whose sum is σ = 15461760. Its totient is φ = 9663480.

The previous prime is 12401539. The next prime is 12401563. The reversal of 12401543 is 34510421.

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 12401543 - 2² = 12401539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12401533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80453 + ... + 80606.

It is an arithmetic number, because the mean of its divisors is an integer number (1932720).

Almost surely, 2^12401543 is an apocalyptic number.

12401543 is a deficient number, since it is larger than the sum of its proper divisors (3060217).

12401543 is a wasteful number, since it uses less digits than its factorization.

12401543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161077.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 12401543 is about 3521.5824567941. The cubic root of 12401543 is about 231.4685056214.

Adding to 12401543 its reverse (34510421), we get a palindrome (46911964).

The spelling of 12401543 in words is "twelve million, four hundred one thousand, five hundred forty-three".