42171670 has 8 divisors (see below), whose sum is σ = 75909024. Its totient is φ = 16868664.

The previous prime is 42171631. The next prime is 42171677. The reversal of 42171670 is 7617124.

42171670 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (42171677) 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 3 ways as a sum of consecutive naturals, for example, 2108574 + ... + 2108593.

It is an arithmetic number, because the mean of its divisors is an integer number (9488628).

Almost surely, 2^42171670 is an apocalyptic number.

42171670 is a deficient number, since it is larger than the sum of its proper divisors (33737354).

42171670 is a wasteful number, since it uses less digits than its factorization.

42171670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4217174.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 42171670 is about 6493.9718200805. The cubic root of 42171670 is about 348.0756155323.

Adding to 42171670 its reverse (7617124), we get a palindrome (49788794).

The spelling of 42171670 in words is "forty-two million, one hundred seventy-one thousand, six hundred seventy".