561242 has 16 divisors (see below), whose sum is σ = 931392. Its totient is φ = 251520.

The previous prime is 561229. The next prime is 561251. The reversal of 561242 is 242165.

It is a happy number.

It is a d-powerful number, because it can be written as 5⁵ + 6² + 2¹⁵ + 1 + 4⁵ + 2¹⁹ .

It is an unprimeable number.

561242 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 (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2003 + ... + 2265.

It is an arithmetic number, because the mean of its divisors is an integer number (58212).

2⁵⁶¹²⁴² is an apocalyptic number.

561242 is a deficient number, since it is larger than the sum of its proper divisors (370150).

561242 is a wasteful number, since it uses less digits than its factorization.

561242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373.

The product of its digits is 480, while the sum is 20.

The square root of 561242 is about 749.1608639004. The cubic root of 561242 is about 82.4865971493.

The spelling of 561242 in words is "five hundred sixty-one thousand, two hundred forty-two".