8581042 has 8 divisors (see below), whose sum is σ = 13315500. Its totient is φ = 4142544.

The previous prime is 8581021. The next prime is 8581043. The reversal of 8581042 is 2401858.

It can be written as a sum of positive squares in 2 ways, for example, as 7890481 + 690561 = 2809^2 + 831^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 8581042.

It is not an unprimeable number, because it can be changed into a prime (8581043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73917 + ... + 74032.

Almost surely, 2^8581042 is an apocalyptic number.

8581042 is a deficient number, since it is larger than the sum of its proper divisors (4734458).

8581042 is a wasteful number, since it uses less digits than its factorization.

8581042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147980.

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 8581042 is about 2929.3415642427. The cubic root of 8581042 is about 204.7293036270.

It can be divided in two parts, 8 and 581042, that multiplied together give a square (4648336 = 2156²).

The spelling of 8581042 in words is "eight million, five hundred eighty-one thousand, forty-two".