5442421543 has 4 divisors (see below), whose sum is σ = 5861069368. Its totient is φ = 5023773720.

The previous prime is 5442421499. The next prime is 5442421553. The reversal of 5442421543 is 3451242445.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5442421543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5442421499 and 5442421508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5442421553) 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, 209323893 + ... + 209323918.

It is an arithmetic number, because the mean of its divisors is an integer number (1465267342).

Almost surely, 2^5442421543 is an apocalyptic number.

5442421543 is a deficient number, since it is larger than the sum of its proper divisors (418647825).

5442421543 is a wasteful number, since it uses less digits than its factorization.

5442421543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418647824.

The product of its digits is 76800, while the sum is 34.

The square root of 5442421543 is about 73772.7696579165. The cubic root of 5442421543 is about 1758.9927887824.

Adding to 5442421543 its reverse (3451242445), we get a palindrome (8893663988).

The spelling of 5442421543 in words is "five billion, four hundred forty-two million, four hundred twenty-one thousand, five hundred forty-three".