255342240 has 96 divisors (see below), whose sum is σ = 893712960. Its totient is φ = 68090112.

The previous prime is 255342233. The next prime is 255342289. The reversal of 255342240 is 42243552.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-3 number, since 3×255342240³ (a number of 26 digits) contains 333 as substring.

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

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 25234 + ... + 33873.

It is an arithmetic number, because the mean of its divisors is an integer number (9309510).

Almost surely, 2^255342240 is an apocalyptic number.

255342240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255342240 is an abundant number, since it is smaller than the sum of its proper divisors (638370720).

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

255342240 is a wasteful number, since it uses less digits than its factorization.

255342240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59131 (or 59117 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 255342240 is about 15979.4317796347. The cubic root of 255342240 is about 634.4161372209.

Adding to 255342240 its reverse (42243552), we get a palindrome (297585792).

The spelling of 255342240 in words is "two hundred fifty-five million, three hundred forty-two thousand, two hundred forty".