42012434369 has 2 divisors, whose sum is σ = 42012434370. Its totient is φ = 42012434368.

The previous prime is 42012434333. The next prime is 42012434371. The reversal of 42012434369 is 96343421024.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33786851344 + 8225583025 = 183812^2 + 90695^2 .

It is a cyclic number.

It is not a de Polignac number, because 42012434369 - 2²⁴ = 41995657153 is a prime.

It is a super-2 number, since 2×42012434369² (a number of 22 digits) contains 22 as substring.

Together with 42012434371, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42012434309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21006217184 + 21006217185.

It is an arithmetic number, because the mean of its divisors is an integer number (21006217185).

Almost surely, 2^42012434369 is an apocalyptic number.

It is an amenable number.

42012434369 is a deficient number, since it is larger than the sum of its proper divisors (1).

42012434369 is an equidigital number, since it uses as much as digits as its factorization.

42012434369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 42012434369 in words is "forty-two billion, twelve million, four hundred thirty-four thousand, three hundred sixty-nine".