42012434443 has 16 divisors (see below), whose sum is σ = 49245041664. Its totient is φ = 35089669440.

The previous prime is 42012434423. The next prime is 42012434449. The reversal of 42012434443 is 34443421024.

It is a de Polignac number, because none of the positive numbers 2^k-42012434443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42012434449) 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 15 ways as a sum of consecutive naturals, for example, 148846 + ... + 325852.

It is an arithmetic number, because the mean of its divisors is an integer number (3077815104).

Almost surely, 2^42012434443 is an apocalyptic number.

42012434443 is a deficient number, since it is larger than the sum of its proper divisors (7232607221).

42012434443 is a wasteful number, since it uses less digits than its factorization.

42012434443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177882.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 42012434443 its reverse (34443421024), we get a palindrome (76455855467).

The spelling of 42012434443 in words is "forty-two billion, twelve million, four hundred thirty-four thousand, four hundred forty-three".