42165631241 has 4 divisors (see below), whose sum is σ = 42444873984. Its totient is φ = 41886388500.

The previous prime is 42165631229. The next prime is 42165631247. The reversal of 42165631241 is 14213656124.

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 42165631241 - 2¹⁰ = 42165630217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42165631247) 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, 139621145 + ... + 139621446.

It is an arithmetic number, because the mean of its divisors is an integer number (10611218496).

Almost surely, 2^42165631241 is an apocalyptic number.

It is an amenable number.

42165631241 is a deficient number, since it is larger than the sum of its proper divisors (279242743).

42165631241 is a wasteful number, since it uses less digits than its factorization.

42165631241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279242742.

The product of its digits is 34560, while the sum is 35.

The spelling of 42165631241 in words is "forty-two billion, one hundred sixty-five million, six hundred thirty-one thousand, two hundred forty-one".