572842 has 4 divisors (see below), whose sum is σ = 859266. Its totient is φ = 286420.

The previous prime is 572833. The next prime is 572843. The reversal of 572842 is 248275.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 301401 + 271441 = 549^2 + 521^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 572842.

It is not an unprimeable number, because it can be changed into a prime (572843) by changing a digit.

572842 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 as a sum of consecutive naturals, namely, 143209 + ... + 143212.

2⁵⁷²⁸⁴² is an apocalyptic number.

572842 is a deficient number, since it is larger than the sum of its proper divisors (286424).

572842 is a wasteful number, since it uses less digits than its factorization.

572842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286423.

The product of its digits is 4480, while the sum is 28.

The square root of 572842 is about 756.8632637406. The cubic root of 572842 is about 83.0510162001.

The spelling of 572842 in words is "five hundred seventy-two thousand, eight hundred forty-two".