571242 has 48 divisors (see below), whose sum is σ = 1395360. Its totient is φ = 155232.

The previous prime is 571231. The next prime is 571261. The reversal of 571242 is 242175.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8493 + ... + 8559.

It is an arithmetic number, because the mean of its divisors is an integer number (29070).

2⁵⁷¹²⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 571242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (697680).

571242 is an abundant number, since it is smaller than the sum of its proper divisors (824118).

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

571242 is a wasteful number, since it uses less digits than its factorization.

571242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 108 counting only the distinct ones).

The product of its digits is 560, while the sum is 21.

The square root of 571242 is about 755.8055305434. The cubic root of 571242 is about 82.9736210748.

The spelling of 571242 in words is "five hundred seventy-one thousand, two hundred forty-two".