8005539942 has 48 divisors (see below), whose sum is σ = 18136804608. Its totient is φ = 2547227760.

The previous prime is 8005539901. The next prime is 8005539947. The reversal of 8005539942 is 2499355008.

8005539942 is a `hidden beast` number, since 8 + 0 + 0 + 553 + 9 + 94 + 2 = 666.

It is a super-3 number, since 3×8005539942³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8005539947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 183583 + ... + 222965.

It is an arithmetic number, because the mean of its divisors is an integer number (377850096).

Almost surely, 2^8005539942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8005539942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9068402304).

8005539942 is an abundant number, since it is smaller than the sum of its proper divisors (10131264666).

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

8005539942 is a wasteful number, since it uses less digits than its factorization.

8005539942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39905 (or 39902 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 8005539942 is about 89473.6829576161. The cubic root of 8005539942 is about 2000.4615553085.

The spelling of 8005539942 in words is "eight billion, five million, five hundred thirty-nine thousand, nine hundred forty-two".