8142168942 has 24 divisors (see below), whose sum is σ = 17823239616. Its totient is φ = 2686075776.

The previous prime is 8142168913. The next prime is 8142168949. The reversal of 8142168942 is 2498612418.

8142168942 is a `hidden beast` number, since 81 + 421 + 68 + 94 + 2 = 666.

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 11 ways as a sum of consecutive naturals, for example, 2329918 + ... + 2333409.

It is an arithmetic number, because the mean of its divisors is an integer number (742634984).

Almost surely, 2^8142168942 is an apocalyptic number.

8142168942 is an abundant number, since it is smaller than the sum of its proper divisors (9681070674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8142168942 is a wasteful number, since it uses less digits than its factorization.

8142168942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4663432 (or 4663429 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 8142168942 is about 90233.9677837565. The cubic root of 8142168942 is about 2011.7779160283. Note that the first 3 decimals are identical.

The spelling of 8142168942 in words is "eight billion, one hundred forty-two million, one hundred sixty-eight thousand, nine hundred forty-two".