581395042 has 8 divisors (see below), whose sum is σ = 873761616. Its totient is φ = 290141172.

The previous prime is 581395039. The next prime is 581395051. The reversal of 581395042 is 240593185.

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

It is a junction number, because it is equal to n+sod(n) for n = 581394992 and 581395010.

It is an unprimeable number.

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, 276868 + ... + 278959.

It is an arithmetic number, because the mean of its divisors is an integer number (109220202).

Almost surely, 2^581395042 is an apocalyptic number.

581395042 is a deficient number, since it is larger than the sum of its proper divisors (292366574).

581395042 is a wasteful number, since it uses less digits than its factorization.

581395042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556352.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 581395042 is about 24112.1347458080. The cubic root of 581395042 is about 834.6231782456.

The spelling of 581395042 in words is "five hundred eighty-one million, three hundred ninety-five thousand, forty-two".