8142168943 has 4 divisors (see below), whose sum is σ = 8240267448. Its totient is φ = 8044070440.

The previous prime is 8142168913. The next prime is 8142168949. The reversal of 8142168943 is 3498612418.

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 8142168943 - 2⁵ = 8142168911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8142168893 and 8142168902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8142168949) 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, 49049128 + ... + 49049293.

It is an arithmetic number, because the mean of its divisors is an integer number (2060066862).

Almost surely, 2^8142168943 is an apocalyptic number.

8142168943 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

8142168943 is a deficient number, since it is larger than the sum of its proper divisors (98098505).

8142168943 is an equidigital number, since it uses as much as digits as its factorization.

8142168943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98098504.

The product of its digits is 331776, while the sum is 46.

The square root of 8142168943 is about 90233.9677892976. The cubic root of 8142168943 is about 2011.7779161107. Note that the first 3 decimals are identical.

The spelling of 8142168943 in words is "eight billion, one hundred forty-two million, one hundred sixty-eight thousand, nine hundred forty-three".