8139240000 has 420 divisors, whose sum is σ = 30451202496. Its totient is φ = 2073984000.

The previous prime is 8139239971. The next prime is 8139240013. The reversal of 8139240000 is 429318.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 8279509 + ... + 8280491.

Almost surely, 2^8139240000 is an apocalyptic number.

8139240000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8139240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15225601248).

8139240000 is an abundant number, since it is smaller than the sum of its proper divisors (22311962496).

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

8139240000 is a wasteful number, since it uses less digits than its factorization.

8139240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044 (or 1016 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 8139240000 is about 90217.7366153685. The cubic root of 8139240000 is about 2011.5366581374.

Adding to 8139240000 its reverse (429318), we get a palindrome (8139669318).

The spelling of 8139240000 in words is "eight billion, one hundred thirty-nine million, two hundred forty thousand".