8171142146 has 4 divisors (see below), whose sum is σ = 12256713222. Its totient is φ = 4085571072.

The previous prime is 8171142143. The next prime is 8171142149. The reversal of 8171142146 is 6412411718.

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

It is an interprime number because it is at equal distance from previous prime (8171142143) and next prime (8171142149).

It can be written as a sum of positive squares in only one way, i.e., 6656764921 + 1514377225 = 81589^2 + 38915^2 .

It is not an unprimeable number, because it can be changed into a prime (8171142143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2042785535 + ... + 2042785538.

Almost surely, 2^8171142146 is an apocalyptic number.

8171142146 is a deficient number, since it is larger than the sum of its proper divisors (4085571076).

8171142146 is a wasteful number, since it uses less digits than its factorization.

8171142146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4085571075.

The product of its digits is 10752, while the sum is 35.

The square root of 8171142146 is about 90394.3701012403. The cubic root of 8171142146 is about 2014.1613371021.

The spelling of 8171142146 in words is "eight billion, one hundred seventy-one million, one hundred forty-two thousand, one hundred forty-six".