42095905 has 4 divisors (see below), whose sum is σ = 50515092. Its totient is φ = 33676720.

The previous prime is 42095897. The next prime is 42095929. The reversal of 42095905 is 50959024.

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 30481441 + 11614464 = 5521^2 + 3408^2 .

It is not a de Polignac number, because 42095905 - 2³ = 42095897 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, 4209586 + ... + 4209595.

It is an arithmetic number, because the mean of its divisors is an integer number (12628773).

Almost surely, 2^42095905 is an apocalyptic number.

It is an amenable number.

42095905 is a deficient number, since it is larger than the sum of its proper divisors (8419187).

42095905 is an equidigital number, since it uses as much as digits as its factorization.

42095905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8419186.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 42095905 is about 6488.1357106645. The cubic root of 42095905 is about 347.8670414039.

The spelling of 42095905 in words is "forty-two million, ninety-five thousand, nine hundred five".