543421109 has 32 divisors (see below), whose sum is σ = 732518400. Its totient is φ = 390277440.

The previous prime is 543421079. The next prime is 543421141. The reversal of 543421109 is 901124345.

543421109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 543421109 - 2¹⁶ = 543355573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543421009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49112 + ... + 59150.

It is an arithmetic number, because the mean of its divisors is an integer number (22891200).

Almost surely, 2^543421109 is an apocalyptic number.

It is an amenable number.

543421109 is a deficient number, since it is larger than the sum of its proper divisors (189097291).

543421109 is a wasteful number, since it uses less digits than its factorization.

543421109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10113.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 543421109 is about 23311.3944027379. The cubic root of 543421109 is about 816.0413546940.

The spelling of 543421109 in words is "five hundred forty-three million, four hundred twenty-one thousand, one hundred nine".