42108671 has 4 divisors (see below), whose sum is σ = 45936744. Its totient is φ = 38280600.

The previous prime is 42108641. The next prime is 42108683. The reversal of 42108671 is 17680124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42108671 - 2¹⁰ = 42107647 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 (42108601) 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, 1914020 + ... + 1914041.

It is an arithmetic number, because the mean of its divisors is an integer number (11484186).

Almost surely, 2^42108671 is an apocalyptic number.

42108671 is a deficient number, since it is larger than the sum of its proper divisors (3828073).

42108671 is a wasteful number, since it uses less digits than its factorization.

42108671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3828072.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 42108671 is about 6489.1194317873. The cubic root of 42108671 is about 347.9022025580.

Adding to 42108671 its reverse (17680124), we get a palindrome (59788795).

The spelling of 42108671 in words is "forty-two million, one hundred eight thousand, six hundred seventy-one".