42165671 has 8 divisors (see below), whose sum is σ = 44200464. Its totient is φ = 40178880.

The previous prime is 42165667. The next prime is 42165689. The reversal of 42165671 is 17656124.

42165671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42165671 - 2² = 42165667 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 (42165631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10196 + ... + 13721.

It is an arithmetic number, because the mean of its divisors is an integer number (5525058).

Almost surely, 2^42165671 is an apocalyptic number.

42165671 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

42165671 is a deficient number, since it is larger than the sum of its proper divisors (2034793).

42165671 is a wasteful number, since it uses less digits than its factorization.

42165671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24001.

The product of its digits is 10080, while the sum is 32.

The square root of 42165671 is about 6493.5099137523. The cubic root of 42165671 is about 348.0591099443.

The spelling of 42165671 in words is "forty-two million, one hundred sixty-five thousand, six hundred seventy-one".