12140421043 has 4 divisors (see below), whose sum is σ = 12147477048. Its totient is φ = 12133365040.

The previous prime is 12140421017. The next prime is 12140421047. The reversal of 12140421043 is 34012404121.

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 12140421043 - 2⁹ = 12140420531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12140421047) 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, 3525421 + ... + 3528862.

It is an arithmetic number, because the mean of its divisors is an integer number (3036869262).

Almost surely, 2^12140421043 is an apocalyptic number.

12140421043 is a deficient number, since it is larger than the sum of its proper divisors (7056005).

12140421043 is an equidigital number, since it uses as much as digits as its factorization.

12140421043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7056004.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 12140421043 its reverse (34012404121), we get a palindrome (46152825164).

The spelling of 12140421043 in words is "twelve billion, one hundred forty million, four hundred twenty-one thousand, forty-three".