255424140 has 36 divisors (see below), whose sum is σ = 774787104. Its totient is φ = 68113056.

The previous prime is 255424139. The next prime is 255424187. The reversal of 255424140 is 41424552.

255424140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 709332 + ... + 709691.

It is an arithmetic number, because the mean of its divisors is an integer number (21521864).

Almost surely, 2^255424140 is an apocalyptic number.

255424140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255424140 is an abundant number, since it is smaller than the sum of its proper divisors (519362964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255424140 is a wasteful number, since it uses less digits than its factorization.

255424140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419038 (or 1419033 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 255424140 is about 15981.9942435229. The cubic root of 255424140 is about 634.4839587812.

Adding to 255424140 its reverse (41424552), we get a palindrome (296848692).

The spelling of 255424140 in words is "two hundred fifty-five million, four hundred twenty-four thousand, one hundred forty".