42171417 has 6 divisors (see below), whose sum is σ = 60914282. Its totient is φ = 28114272.

The previous prime is 42171401. The next prime is 42171421. The reversal of 42171417 is 71417124.

It can be written as a sum of positive squares in only one way, i.e., 35390601 + 6780816 = 5949^2 + 2604^2 .

It is not a de Polignac number, because 42171417 - 2⁴ = 42171401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42171457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2342848 + ... + 2342865.

Almost surely, 2^42171417 is an apocalyptic number.

It is an amenable number.

42171417 is a deficient number, since it is larger than the sum of its proper divisors (18742865).

42171417 is a wasteful number, since it uses less digits than its factorization.

42171417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4685719 (or 4685716 counting only the distinct ones).

The product of its digits is 1568, while the sum is 27.

The square root of 42171417 is about 6493.9523404472. The cubic root of 42171417 is about 348.0749194623.

The spelling of 42171417 in words is "forty-two million, one hundred seventy-one thousand, four hundred seventeen".