8171760442 has 4 divisors (see below), whose sum is σ = 12257640666. Its totient is φ = 4085880220.

The previous prime is 8171760433. The next prime is 8171760449. The reversal of 8171760442 is 2440671718.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7968954361 + 202806081 = 89269^2 + 14241^2 .

It is a super-3 number, since 3×8171760442³ (a number of 31 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 8171760395 and 8171760404.

It is not an unprimeable number, because it can be changed into a prime (8171760449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2042940109 + ... + 2042940112.

Almost surely, 2^8171760442 is an apocalyptic number.

8171760442 is a deficient number, since it is larger than the sum of its proper divisors (4085880224).

8171760442 is a wasteful number, since it uses less digits than its factorization.

8171760442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4085880223.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 8171760442 is about 90397.7900282966. The cubic root of 8171760442 is about 2014.2121385064.

The spelling of 8171760442 in words is "eight billion, one hundred seventy-one million, seven hundred sixty thousand, four hundred forty-two".