242123255 has 8 divisors (see below), whose sum is σ = 316961424. Its totient is φ = 176089600.

The previous prime is 242123243. The next prime is 242123257. The reversal of 242123255 is 552321242.

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

It is not a de Polignac number, because 242123255 - 2¹⁴ = 242106871 is a prime.

It is a super-2 number, since 2×242123255² = 117247341223590050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242123257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2201066 + ... + 2201175.

It is an arithmetic number, because the mean of its divisors is an integer number (39620178).

Almost surely, 2^242123255 is an apocalyptic number.

242123255 is a deficient number, since it is larger than the sum of its proper divisors (74838169).

242123255 is a wasteful number, since it uses less digits than its factorization.

242123255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4402257.

The product of its digits is 4800, while the sum is 26.

The square root of 242123255 is about 15560.3102475497. The cubic root of 242123255 is about 623.2737474062.

Adding to 242123255 its reverse (552321242), we get a palindrome (794444497).

The spelling of 242123255 in words is "two hundred forty-two million, one hundred twenty-three thousand, two hundred fifty-five".