543602421 has 24 divisors (see below), whose sum is σ = 862190784. Its totient is φ = 341081280.

The previous prime is 543602413. The next prime is 543602443. The reversal of 543602421 is 124206345.

543602421 is a `hidden beast` number, since 54 + 3 + 602 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 543602421 - 2³ = 543602413 is a prime.

It is a super-2 number, since 2×543602421² = 591007184234122482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543602471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61665 + ... + 69926.

It is an arithmetic number, because the mean of its divisors is an integer number (35924616).

Almost surely, 2^543602421 is an apocalyptic number.

543602421 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

543602421 is a deficient number, since it is larger than the sum of its proper divisors (318588363).

543602421 is a wasteful number, since it uses less digits than its factorization.

543602421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131623 (or 131611 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 543602421 is about 23315.2829920634. The cubic root of 543602421 is about 816.1321017747.

Adding to 543602421 its reverse (124206345), we get a palindrome (667808766).

The spelling of 543602421 in words is "five hundred forty-three million, six hundred two thousand, four hundred twenty-one".