1440042323 has 8 divisors (see below), whose sum is σ = 1486311360. Its totient is φ = 1394502120.

The previous prime is 1440042313. The next prime is 1440042343. The reversal of 1440042323 is 3232400441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1440042323 - 2¹⁰ = 1440041299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1440042313) 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 7 ways as a sum of consecutive naturals, for example, 178193 + ... + 186098.

It is an arithmetic number, because the mean of its divisors is an integer number (185788920).

Almost surely, 2^1440042323 is an apocalyptic number.

1440042323 is a deficient number, since it is larger than the sum of its proper divisors (46269037).

1440042323 is an equidigital number, since it uses as much as digits as its factorization.

1440042323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364417.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1440042323 is about 37947.8895724123. The cubic root of 1440042323 is about 1129.2542977344.

Adding to 1440042323 its reverse (3232400441), we get a palindrome (4672442764).

The spelling of 1440042323 in words is "one billion, four hundred forty million, forty-two thousand, three hundred twenty-three".