255405123 has 16 divisors (see below), whose sum is σ = 379293600. Its totient is φ = 169858080.

The previous prime is 255405121. The next prime is 255405131. The reversal of 255405123 is 321504552.

It is a happy number.

255405123 is a `hidden beast` number, since 255 + 405 + 1 + 2 + 3 = 666.

255405123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 255405123 - 2¹ = 255405121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (255405121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133 + ... + 22601.

It is an arithmetic number, because the mean of its divisors is an integer number (23705850).

Almost surely, 2^255405123 is an apocalyptic number.

255405123 is a deficient number, since it is larger than the sum of its proper divisors (123888477).

255405123 is a wasteful number, since it uses less digits than its factorization.

255405123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22899 (or 22893 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 255405123 is about 15981.3992816649. The cubic root of 255405123 is about 634.4682120565.

Adding to 255405123 its reverse (321504552), we get a palindrome (576909675).

The spelling of 255405123 in words is "two hundred fifty-five million, four hundred five thousand, one hundred twenty-three".