255123243 has 8 divisors (see below), whose sum is σ = 377960400. Its totient is φ = 170082144.

The previous prime is 255123227. The next prime is 255123259. The reversal of 255123243 is 342321552.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (255123227) and next prime (255123259).

It is not a de Polignac number, because 255123243 - 2⁴ = 255123227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 9449009 = 255123243 / (2 + 5 + 5 + 1 + 2 + 3 + 2 + 4 + 3).

It is not an unprimeable number, because it can be changed into a prime (255123223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4724478 + ... + 4724531.

It is an arithmetic number, because the mean of its divisors is an integer number (47245050).

Almost surely, 2^255123243 is an apocalyptic number.

255123243 is a deficient number, since it is larger than the sum of its proper divisors (122837157).

255123243 is an equidigital number, since it uses as much as digits as its factorization.

255123243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9449018 (or 9449012 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 255123243 is about 15972.5778445434. The cubic root of 255123243 is about 634.2347140853.

Adding to 255123243 its reverse (342321552), we get a palindrome (597444795).

The spelling of 255123243 in words is "two hundred fifty-five million, one hundred twenty-three thousand, two hundred forty-three".