543442121 has 4 divisors (see below), whose sum is σ = 560972544. Its totient is φ = 525911700.

The previous prime is 543442093. The next prime is 543442129. The reversal of 543442121 is 121244345.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 543442121 - 2⁶ = 543442057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (543442129) 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, 8765165 + ... + 8765226.

It is an arithmetic number, because the mean of its divisors is an integer number (140243136).

Almost surely, 2^543442121 is an apocalyptic number.

It is an amenable number.

543442121 is a deficient number, since it is larger than the sum of its proper divisors (17530423).

543442121 is a wasteful number, since it uses less digits than its factorization.

543442121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17530422.

The product of its digits is 3840, while the sum is 26.

The square root of 543442121 is about 23311.8450792725. The cubic root of 543442121 is about 816.0518722832.

Adding to 543442121 its reverse (121244345), we get a palindrome (664686466).

It can be divided in two parts, 54344 and 2121, that added together give a palindrome (56465).

The spelling of 543442121 in words is "five hundred forty-three million, four hundred forty-two thousand, one hundred twenty-one".