1442344340 has 24 divisors (see below), whose sum is σ = 3188340960. Its totient is φ = 546572448.

The previous prime is 1442344303. The next prime is 1442344349. The reversal of 1442344340 is 434432441.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442344349) 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, 1897442 + ... + 1898201.

It is an arithmetic number, because the mean of its divisors is an integer number (132847540).

Almost surely, 2^1442344340 is an apocalyptic number.

1442344340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442344340 is an abundant number, since it is smaller than the sum of its proper divisors (1745996620).

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

1442344340 is a wasteful number, since it uses less digits than its factorization.

1442344340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3795671 (or 3795669 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

The square root of 1442344340 is about 37978.2087518619. The cubic root of 1442344340 is about 1129.8557102944.

Adding to 1442344340 its reverse (434432441), we get a palindrome (1876776781).

The spelling of 1442344340 in words is "one billion, four hundred forty-two million, three hundred forty-four thousand, three hundred forty".