42939565305 has 32 divisors (see below), whose sum is σ = 84557915904. Its totient is φ = 18119552256.

The previous prime is 42939565259. The next prime is 42939565309. The reversal of 42939565305 is 50356593924.

It is not a de Polignac number, because 42939565305 - 2¹² = 42939561209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42939565309) 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 31 ways as a sum of consecutive naturals, for example, 15727414 + ... + 15730143.

It is an arithmetic number, because the mean of its divisors is an integer number (2642434872).

Almost surely, 2^42939565305 is an apocalyptic number.

It is an amenable number.

42939565305 is a deficient number, since it is larger than the sum of its proper divisors (41618350599).

42939565305 is a wasteful number, since it uses less digits than its factorization.

42939565305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31457585.

The product of its (nonzero) digits is 4374000, while the sum is 51.

The spelling of 42939565305 in words is "forty-two billion, nine hundred thirty-nine million, five hundred sixty-five thousand, three hundred five".