1140042311 has 4 divisors (see below), whose sum is σ = 1189609392. Its totient is φ = 1090475232.

The previous prime is 1140042263. The next prime is 1140042317. The reversal of 1140042311 is 1132400411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140042311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1140042311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140042317) 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 3 ways as a sum of consecutive naturals, for example, 24783506 + ... + 24783551.

It is an arithmetic number, because the mean of its divisors is an integer number (297402348).

Almost surely, 2^1140042311 is an apocalyptic number.

1140042311 is a deficient number, since it is larger than the sum of its proper divisors (49567081).

1140042311 is an equidigital number, since it uses as much as digits as its factorization.

1140042311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49567080.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1140042311 is about 33764.5125982888. The cubic root of 1140042311 is about 1044.6568506183.

Adding to 1140042311 its reverse (1132400411), we get a palindrome (2272442722).

The spelling of 1140042311 in words is "one billion, one hundred forty million, forty-two thousand, three hundred eleven".