42355171 has 4 divisors (see below), whose sum is σ = 42481192. Its totient is φ = 42229152.

The previous prime is 42355169. The next prime is 42355193. The reversal of 42355171 is 17155324.

It is a happy number.

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 42355171 - 2¹ = 42355169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42355141) 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, 62505 + ... + 63178.

It is an arithmetic number, because the mean of its divisors is an integer number (10620298).

Almost surely, 2^42355171 is an apocalyptic number.

42355171 is a deficient number, since it is larger than the sum of its proper divisors (126021).

42355171 is a wasteful number, since it uses less digits than its factorization.

42355171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126020.

The product of its digits is 4200, while the sum is 28.

The square root of 42355171 is about 6508.0850486145. The cubic root of 42355171 is about 348.5797438940.

The spelling of 42355171 in words is "forty-two million, three hundred fifty-five thousand, one hundred seventy-one".