42175837505 has 4 divisors (see below), whose sum is σ = 50611005012. Its totient is φ = 33740670000.

The previous prime is 42175837493. The next prime is 42175837513. The reversal of 42175837505 is 50573857124.

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 5114967361 + 37060870144 = 71519^2 + 192512^2 .

It is not a de Polignac number, because 42175837505 - 2⁶ = 42175837441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42175837505.

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, 4217583746 + ... + 4217583755.

It is an arithmetic number, because the mean of its divisors is an integer number (12652751253).

Almost surely, 2^42175837505 is an apocalyptic number.

It is an amenable number.

42175837505 is a deficient number, since it is larger than the sum of its proper divisors (8435167507).

42175837505 is an equidigital number, since it uses as much as digits as its factorization.

42175837505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8435167506.

The product of its (nonzero) digits is 1176000, while the sum is 47.

The spelling of 42175837505 in words is "forty-two billion, one hundred seventy-five million, eight hundred thirty-seven thousand, five hundred five".