42171716 has 12 divisors (see below), whose sum is σ = 77684880. Its totient is φ = 19976040.

The previous prime is 42171707. The next prime is 42171721. The reversal of 42171716 is 61717124.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277370 + ... + 277521.

It is an arithmetic number, because the mean of its divisors is an integer number (6473740).

Almost surely, 2^42171716 is an apocalyptic number.

It is an amenable number.

42171716 is a deficient number, since it is larger than the sum of its proper divisors (35513164).

42171716 is a wasteful number, since it uses less digits than its factorization.

42171716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554914 (or 554912 counting only the distinct ones).

The product of its digits is 2352, while the sum is 29.

The square root of 42171716 is about 6493.9753618258. The cubic root of 42171716 is about 348.0757420902.

The spelling of 42171716 in words is "forty-two million, one hundred seventy-one thousand, seven hundred sixteen".