7581047842 has 16 divisors (see below), whose sum is σ = 11978400960. Its totient is φ = 3588525072.

The previous prime is 7581047833. The next prime is 7581047863. The reversal of 7581047842 is 2487401857.

It is a junction number, because it is equal to n+sod(n) for n = 7581047792 and 7581047801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13438 + ... + 123865.

It is an arithmetic number, because the mean of its divisors is an integer number (748650060).

Almost surely, 2^7581047842 is an apocalyptic number.

7581047842 is a deficient number, since it is larger than the sum of its proper divisors (4397353118).

7581047842 is a wasteful number, since it uses less digits than its factorization.

7581047842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138777.

The product of its (nonzero) digits is 501760, while the sum is 46.

The square root of 7581047842 is about 87069.2129400513. The cubic root of 7581047842 is about 1964.4594975235.

The spelling of 7581047842 in words is "seven billion, five hundred eighty-one million, forty-seven thousand, eight hundred forty-two".