42541603667305 has 4 divisors (see below), whose sum is σ = 51049924400772. Its totient is φ = 34033282933840.

The previous prime is 42541603667263. The next prime is 42541603667309. The reversal of 42541603667305 is 50376630614524.

It is a happy number.

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 12185349525504 + 30356254141801 = 3490752^2 + 5509651^2 .

It is not a de Polignac number, because 42541603667305 - 2³¹ = 42539456183657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42541603667309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4254160366726 + ... + 4254160366735.

It is an arithmetic number, because the mean of its divisors is an integer number (12762481100193).

Almost surely, 2^{42541603667305} is an apocalyptic number.

It is an amenable number.

42541603667305 is a deficient number, since it is larger than the sum of its proper divisors (8508320733467).

42541603667305 is an equidigital number, since it uses as much as digits as its factorization.

42541603667305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8508320733466.

The product of its (nonzero) digits is 10886400, while the sum is 52.

The spelling of 42541603667305 in words is "forty-two trillion, five hundred forty-one billion, six hundred three million, six hundred sixty-seven thousand, three hundred five".