42530661305 has 8 divisors (see below), whose sum is σ = 55676502144. Its totient is φ = 30931390000.

The previous prime is 42530661281. The next prime is 42530661317. The reversal of 42530661305 is 50316603524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42530661305 - 2¹⁰ = 42530660281 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 386642321 + ... + 386642430.

It is an arithmetic number, because the mean of its divisors is an integer number (6959562768).

Almost surely, 2^42530661305 is an apocalyptic number.

It is an amenable number.

42530661305 is a deficient number, since it is larger than the sum of its proper divisors (13145840839).

42530661305 is a wasteful number, since it uses less digits than its factorization.

42530661305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773284767.

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 42530661305 in words is "forty-two billion, five hundred thirty million, six hundred sixty-one thousand, three hundred five".