42730777105 has 4 divisors (see below), whose sum is σ = 51276932532. Its totient is φ = 34184621680.

The previous prime is 42730777097. The next prime is 42730777121. The reversal of 42730777105 is 50177703724.

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 12061310976 + 30669466129 = 109824^2 + 175127^2 .

It is not a de Polignac number, because 42730777105 - 2³ = 42730777097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4273077706 + ... + 4273077715.

It is an arithmetic number, because the mean of its divisors is an integer number (12819233133).

Almost surely, 2^42730777105 is an apocalyptic number.

It is an amenable number.

42730777105 is a deficient number, since it is larger than the sum of its proper divisors (8546155427).

42730777105 is an equidigital number, since it uses as much as digits as its factorization.

42730777105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8546155426.

The product of its (nonzero) digits is 288120, while the sum is 43.

The spelling of 42730777105 in words is "forty-two billion, seven hundred thirty million, seven hundred seventy-seven thousand, one hundred five".