543423540 has 96 divisors (see below), whose sum is σ = 1669449600. Its totient is φ = 130982400.

The previous prime is 543423509. The next prime is 543423557. The reversal of 543423540 is 45324345.

It is a super-2 number, since 2×543423540² = 590618287652263200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 543423498 and 543423507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117186 + ... + 121734.

It is an arithmetic number, because the mean of its divisors is an integer number (17390100).

Almost surely, 2^543423540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 543423540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (834724800).

543423540 is an abundant number, since it is smaller than the sum of its proper divisors (1126026060).

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

543423540 is a wasteful number, since it uses less digits than its factorization.

543423540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4753 (or 4751 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

The square root of 543423540 is about 23311.4465445626. The cubic root of 543423540 is about 816.0425715487.

Adding to 543423540 its reverse (45324345), we get a palindrome (588747885).

The spelling of 543423540 in words is "five hundred forty-three million, four hundred twenty-three thousand, five hundred forty".