1442421543 has 8 divisors (see below), whose sum is σ = 1923506800. Its totient is φ = 961475328.

The previous prime is 1442421523. The next prime is 1442421551. The reversal of 1442421543 is 3451242441.

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

It is not a de Polignac number, because 1442421543 - 2⁶ = 1442421479 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1442421543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442421503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7498 + ... + 54231.

It is an arithmetic number, because the mean of its divisors is an integer number (240438350).

Almost surely, 2^1442421543 is an apocalyptic number.

1442421543 is a deficient number, since it is larger than the sum of its proper divisors (481085257).

1442421543 is an equidigital number, since it uses as much as digits as its factorization.

1442421543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69521.

The product of its digits is 15360, while the sum is 30.

The square root of 1442421543 is about 37979.2251500738. The cubic root of 1442421543 is about 1129.8758688404.

Adding to 1442421543 its reverse (3451242441), we get a palindrome (4893663984).

The spelling of 1442421543 in words is "one billion, four hundred forty-two million, four hundred twenty-one thousand, five hundred forty-three".