421043120041 has 4 divisors (see below), whose sum is σ = 421044495184. Its totient is φ = 421041744900.

The previous prime is 421043120039. The next prime is 421043120051. The reversal of 421043120041 is 140021340124.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 421043120041 - 2¹ = 421043120039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421043119994 and 421043120021.

It is not an unprimeable number, because it can be changed into a prime (421043120021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2686 + ... + 917656.

It is an arithmetic number, because the mean of its divisors is an integer number (105261123796).

Almost surely, 2^421043120041 is an apocalyptic number.

It is an amenable number.

421043120041 is a deficient number, since it is larger than the sum of its proper divisors (1375143).

421043120041 is an equidigital number, since it uses as much as digits as its factorization.

421043120041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375142.

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

Adding to 421043120041 its reverse (140021340124), we get a palindrome (561064460165).

The spelling of 421043120041 in words is "four hundred twenty-one billion, forty-three million, one hundred twenty thousand, forty-one".