1440344042 has 8 divisors (see below), whose sum is σ = 2254451616. Its totient is φ = 688860172.

The previous prime is 1440344033. The next prime is 1440344047. The reversal of 1440344042 is 2404430441.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1440344047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15655868 + ... + 15655959.

It is an arithmetic number, because the mean of its divisors is an integer number (281806452).

Almost surely, 2^1440344042 is an apocalyptic number.

1440344042 is a deficient number, since it is larger than the sum of its proper divisors (814107574).

1440344042 is a wasteful number, since it uses less digits than its factorization.

1440344042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31311852.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 1440344042 is about 37951.8648026681. The cubic root of 1440344042 is about 1129.3331596953. Note that the first 3 decimals are identical.

Adding to 1440344042 its reverse (2404430441), we get a palindrome (3844774483).

The spelling of 1440344042 in words is "one billion, four hundred forty million, three hundred forty-four thousand, forty-two".