42445434343 has 16 divisors (see below), whose sum is σ = 47626941600. Its totient is φ = 37557152640.

The previous prime is 42445434323. The next prime is 42445434347. The reversal of 42445434343 is 34343454424.

It is a cyclic number.

It is not a de Polignac number, because 42445434343 - 2³³ = 33855499751 is a prime.

It is a super-2 number, since 2×42445434343² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42445434296 and 42445434305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42445434347) 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 15 ways as a sum of consecutive naturals, for example, 352588 + ... + 457393.

It is an arithmetic number, because the mean of its divisors is an integer number (2976683850).

Almost surely, 2^42445434343 is an apocalyptic number.

42445434343 is a deficient number, since it is larger than the sum of its proper divisors (5181507257).

42445434343 is a wasteful number, since it uses less digits than its factorization.

42445434343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810162.

The product of its digits is 1105920, while the sum is 40.

Adding to 42445434343 its reverse (34343454424), we get a palindrome (76788888767).

The spelling of 42445434343 in words is "forty-two billion, four hundred forty-five million, four hundred thirty-four thousand, three hundred forty-three".