42190380917 has 4 divisors (see below), whose sum is σ = 42358470336. Its totient is φ = 42022291500.

The previous prime is 42190380871. The next prime is 42190380923. The reversal of 42190380917 is 71908309124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42190380917 - 2¹⁰ = 42190379893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42190380997) 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, 84044333 + ... + 84044834.

It is an arithmetic number, because the mean of its divisors is an integer number (10589617584).

Almost surely, 2^42190380917 is an apocalyptic number.

It is an amenable number.

42190380917 is a deficient number, since it is larger than the sum of its proper divisors (168089419).

42190380917 is a wasteful number, since it uses less digits than its factorization.

42190380917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168089418.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 42190380917 in words is "forty-two billion, one hundred ninety million, three hundred eighty thousand, nine hundred seventeen".