42411221543 has 4 divisors (see below), whose sum is σ = 42419792688. Its totient is φ = 42402650400.

The previous prime is 42411221537. The next prime is 42411221561. The reversal of 42411221543 is 34512211424.

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 42411221543 - 2⁴ = 42411221527 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 (42411221143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4278146 + ... + 4288047.

It is an arithmetic number, because the mean of its divisors is an integer number (10604948172).

Almost surely, 2^42411221543 is an apocalyptic number.

42411221543 is a deficient number, since it is larger than the sum of its proper divisors (8571145).

42411221543 is an equidigital number, since it uses as much as digits as its factorization.

42411221543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8571144.

The product of its digits is 7680, while the sum is 29.

Adding to 42411221543 its reverse (34512211424), we get a palindrome (76923432967).

The spelling of 42411221543 in words is "forty-two billion, four hundred eleven million, two hundred twenty-one thousand, five hundred forty-three".