8129312842 has 8 divisors (see below), whose sum is σ = 13935964896. Its totient is φ = 3483991212.

The previous prime is 8129312831. The next prime is 8129312879. The reversal of 8129312842 is 2482139218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×8129312842² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8129312795 and 8129312804.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290332588 + ... + 290332615.

It is an arithmetic number, because the mean of its divisors is an integer number (1741995612).

Almost surely, 2^8129312842 is an apocalyptic number.

8129312842 is a deficient number, since it is larger than the sum of its proper divisors (5806652054).

8129312842 is a wasteful number, since it uses less digits than its factorization.

8129312842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580665212.

The product of its digits is 55296, while the sum is 40.

The square root of 8129312842 is about 90162.7020557836. The cubic root of 8129312842 is about 2010.7185241684.

The spelling of 8129312842 in words is "eight billion, one hundred twenty-nine million, three hundred twelve thousand, eight hundred forty-two".