240020255 has 8 divisors (see below), whose sum is σ = 303183600. Its totient is φ = 181910016.

The previous prime is 240020243. The next prime is 240020279. The reversal of 240020255 is 552020042.

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

It is a cyclic number.

It is not a de Polignac number, because 240020255 - 2⁴ = 240020239 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 1263170 + ... + 1263359.

It is an arithmetic number, because the mean of its divisors is an integer number (37897950).

Almost surely, 2^240020255 is an apocalyptic number.

240020255 is a deficient number, since it is larger than the sum of its proper divisors (63163345).

240020255 is a wasteful number, since it uses less digits than its factorization.

240020255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526553.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 240020255 is about 15492.5870983513. The cubic root of 240020255 is about 621.4639831974.

Adding to 240020255 its reverse (552020042), we get a palindrome (792040297).

The spelling of 240020255 in words is "two hundred forty million, twenty thousand, two hundred fifty-five".