581542242 has 8 divisors (see below), whose sum is σ = 1163084496. Its totient is φ = 193847412.

The previous prime is 581542231. The next prime is 581542243. The reversal of 581542242 is 242245185.

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

581542242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (581542243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48461848 + ... + 48461859.

It is an arithmetic number, because the mean of its divisors is an integer number (145385562).

Almost surely, 2^581542242 is an apocalyptic number.

581542242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

581542242 is a wasteful number, since it uses less digits than its factorization.

581542242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96923712.

The product of its digits is 25600, while the sum is 33.

The square root of 581542242 is about 24115.1869576000. The cubic root of 581542242 is about 834.6936100840.

The spelling of 581542242 in words is "five hundred eighty-one million, five hundred forty-two thousand, two hundred forty-two".