1440243342 has 40 divisors (see below), whose sum is σ = 3233310696. Its totient is φ = 479173968.

The previous prime is 1440243319. The next prime is 1440243347. The reversal of 1440243342 is 2433420441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440243347) 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 19 ways as a sum of consecutive naturals, for example, 80488 + ... + 96740.

Almost surely, 2^1440243342 is an apocalyptic number.

1440243342 is an abundant number, since it is smaller than the sum of its proper divisors (1793067354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1440243342 is a wasteful number, since it uses less digits than its factorization.

1440243342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16814 (or 16805 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 1440243342 is about 37950.5380989519. The cubic root of 1440243342 is about 1129.3068404049.

Adding to 1440243342 its reverse (2433420441), we get a palindrome (3873663783).

The spelling of 1440243342 in words is "one billion, four hundred forty million, two hundred forty-three thousand, three hundred forty-two".