1440240255 has 24 divisors (see below), whose sum is σ = 2643265872. Its totient is φ = 722943744.

The previous prime is 1440240239. The next prime is 1440240283. The reversal of 1440240255 is 5520420441.

1440240255 is a `hidden beast` number, since 1 + 4 + 402 + 4 + 0 + 255 = 666.

It is not a de Polignac number, because 1440240255 - 2⁴ = 1440240239 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 940569 + ... + 942098.

It is an arithmetic number, because the mean of its divisors is an integer number (110136078).

Almost surely, 2^1440240255 is an apocalyptic number.

1440240255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1440240255 is a deficient number, since it is larger than the sum of its proper divisors (1203025617).

1440240255 is a wasteful number, since it uses less digits than its factorization.

1440240255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882695 (or 1882692 counting only the distinct ones).

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

The square root of 1440240255 is about 37950.4974275700. The cubic root of 1440240255 is about 1129.3060335568.

Adding to 1440240255 its reverse (5520420441), we get a palindrome (6960660696).

The spelling of 1440240255 in words is "one billion, four hundred forty million, two hundred forty thousand, two hundred fifty-five".