242555 has 8 divisors (see below), whose sum is σ = 294000. Its totient is φ = 192096.

The previous prime is 242551. The next prime is 242591. The reversal of 242555 is 555242.

242555 = 75² + 76² + ... + 104².

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

It is a cyclic number.

It is not a de Polignac number, because 242555 - 2² = 242551 is a prime.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 242555.

It is not an unprimeable number, because it can be changed into a prime (242551) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 521 + ... + 869.

It is an arithmetic number, because the mean of its divisors is an integer number (36750).

2²⁴²⁵⁵⁵ is an apocalyptic number.

242555 is a deficient number, since it is larger than the sum of its proper divisors (51445).

242555 is a wasteful number, since it uses less digits than its factorization.

242555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493.

The product of its digits is 2000, while the sum is 23.

The square root of 242555 is about 492.4987309628. The cubic root of 242555 is about 62.3643993455.

Adding to 242555 its reverse (555242), we get a palindrome (797797).

It can be divided in two parts, 242 and 555, that added together give a palindrome (797).

The spelling of 242555 in words is "two hundred forty-two thousand, five hundred fifty-five".