1140042323 has 4 divisors (see below), whose sum is σ = 1302905520. Its totient is φ = 977179128.

The previous prime is 1140042317. The next prime is 1140042373. The reversal of 1140042323 is 3232400411.

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

It is a cyclic number.

It is not a de Polignac number, because 1140042323 - 2⁶ = 1140042259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1140042295 and 1140042304.

It is not an unprimeable number, because it can be changed into a prime (1140042373) 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, 81431588 + ... + 81431601.

It is an arithmetic number, because the mean of its divisors is an integer number (325726380).

Almost surely, 2^1140042323 is an apocalyptic number.

1140042323 is a deficient number, since it is larger than the sum of its proper divisors (162863197).

1140042323 is an equidigital number, since it uses as much as digits as its factorization.

1140042323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162863196.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1140042323 is about 33764.5127759901. The cubic root of 1140042323 is about 1044.6568542837.

Adding to 1140042323 its reverse (3232400411), we get a palindrome (4372442734).

The spelling of 1140042323 in words is "one billion, one hundred forty million, forty-two thousand, three hundred twenty-three".