1140042555 has 24 divisors (see below), whose sum is σ = 1990301040. Its totient is φ = 603645120.

The previous prime is 1140042539. The next prime is 1140042583. The reversal of 1140042555 is 5552400411.

1140042555 is a `hidden beast` number, since 1 + 1 + 400 + 4 + 255 + 5 = 666.

It is not a de Polignac number, because 1140042555 - 2⁴ = 1140042539 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84876 + ... + 97385.

It is an arithmetic number, because the mean of its divisors is an integer number (82929210).

Almost surely, 2^1140042555 is an apocalyptic number.

1140042555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1140042555 is a deficient number, since it is larger than the sum of its proper divisors (850258485).

1140042555 is a wasteful number, since it uses less digits than its factorization.

1140042555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182411 (or 182408 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1140042555 is about 33764.5162115497. The cubic root of 1140042555 is about 1044.6569251466.

Adding to 1140042555 its reverse (5552400411), we get a palindrome (6692442966).

The spelling of 1140042555 in words is "one billion, one hundred forty million, forty-two thousand, five hundred fifty-five".