12401400043 has 4 divisors (see below), whose sum is σ = 12409936528. Its totient is φ = 12392863560.

The previous prime is 12401400031. The next prime is 12401400059. The reversal of 12401400043 is 34000410421.

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 12401400043 - 2⁹ = 12401399531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12401400083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4266063 + ... + 4268968.

It is an arithmetic number, because the mean of its divisors is an integer number (3102484132).

Almost surely, 2^12401400043 is an apocalyptic number.

12401400043 is a deficient number, since it is larger than the sum of its proper divisors (8536485).

12401400043 is an equidigital number, since it uses as much as digits as its factorization.

12401400043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8536484.

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

Adding to 12401400043 its reverse (34000410421), we get a palindrome (46401810464).

The spelling of 12401400043 in words is "twelve billion, four hundred one million, four hundred thousand, forty-three".