42004343345 has 4 divisors (see below), whose sum is σ = 50405212020. Its totient is φ = 33603474672.

The previous prime is 42004343323. The next prime is 42004343363. The reversal of 42004343345 is 54334340024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20018571169 + 21985772176 = 141487^2 + 148276^2 .

It is a cyclic number.

It is not a de Polignac number, because 42004343345 - 2⁶ = 42004343281 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4200434330 + ... + 4200434339.

It is an arithmetic number, because the mean of its divisors is an integer number (12601303005).

Almost surely, 2^42004343345 is an apocalyptic number.

It is an amenable number.

42004343345 is a deficient number, since it is larger than the sum of its proper divisors (8400868675).

42004343345 is an equidigital number, since it uses as much as digits as its factorization.

42004343345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8400868674.

The product of its (nonzero) digits is 69120, while the sum is 32.

Adding to 42004343345 its reverse (54334340024), we get a palindrome (96338683369).

The spelling of 42004343345 in words is "forty-two billion, four million, three hundred forty-three thousand, three hundred forty-five".