1140278505 has 16 divisors (see below), whose sum is σ = 1835374464. Its totient is φ = 604505600.

The previous prime is 1140278501. The next prime is 1140278527. The reversal of 1140278505 is 5058720411.

It is not a de Polignac number, because 1140278505 - 2² = 1140278501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1140278501) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 225096 + ... + 230105.

It is an arithmetic number, because the mean of its divisors is an integer number (114710904).

Almost surely, 2^1140278505 is an apocalyptic number.

1140278505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1140278505 is a deficient number, since it is larger than the sum of its proper divisors (695095959).

1140278505 is a wasteful number, since it uses less digits than its factorization.

1140278505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455376.

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 1140278505 is about 33768.0100835095. The cubic root of 1140278505 is about 1044.7289896491.

Adding to 1140278505 its reverse (5058720411), we get a palindrome (6198998916).

The spelling of 1140278505 in words is "one billion, one hundred forty million, two hundred seventy-eight thousand, five hundred five".