42121421432411 has 2 divisors, whose sum is σ = 42121421432412. Its totient is φ = 42121421432410.

The previous prime is 42121421432401. The next prime is 42121421432491. The reversal of 42121421432411 is 11423412412124.

It is a happy number.

42121421432411 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42121421432411 - 2³⁴ = 42104241563227 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (42121421432401) 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 as a sum of consecutive naturals, namely, 21060710716205 + 21060710716206.

It is an arithmetic number, because the mean of its divisors is an integer number (21060710716206).

Almost surely, 2^{42121421432411} is an apocalyptic number.

42121421432411 is a deficient number, since it is larger than the sum of its proper divisors (1).

42121421432411 is an equidigital number, since it uses as much as digits as its factorization.

42121421432411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12288, while the sum is 32.

Adding to 42121421432411 its reverse (11423412412124), we get a palindrome (53544833844535).

The spelling of 42121421432411 in words is "forty-two trillion, one hundred twenty-one billion, four hundred twenty-one million, four hundred thirty-two thousand, four hundred eleven".