42917171 has 4 divisors (see below), whose sum is σ = 46818744. Its totient is φ = 39015600.

The previous prime is 42917167. The next prime is 42917177. The reversal of 42917171 is 17171924.

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 42917171 - 2² = 42917167 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42917177) 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, 1950770 + ... + 1950791.

It is an arithmetic number, because the mean of its divisors is an integer number (11704686).

Almost surely, 2^42917171 is an apocalyptic number.

42917171 is a deficient number, since it is larger than the sum of its proper divisors (3901573).

42917171 is a wasteful number, since it uses less digits than its factorization.

42917171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901572.

The product of its digits is 3528, while the sum is 32.

The square root of 42917171 is about 6551.1198279378. The cubic root of 42917171 is about 350.1147134187.

The spelling of 42917171 in words is "forty-two million, nine hundred seventeen thousand, one hundred seventy-one".