543542 has 4 divisors (see below), whose sum is σ = 815316. Its totient is φ = 271770.

The previous prime is 543539. The next prime is 543551. The reversal of 543542 is 245345.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245345 = 5 ⋅49069.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135884 + ... + 135887.

It is an arithmetic number, because the mean of its divisors is an integer number (203829).

2⁵⁴³⁵⁴² is an apocalyptic number.

543542 is a deficient number, since it is larger than the sum of its proper divisors (271774).

543542 is a wasteful number, since it uses less digits than its factorization.

543542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271773.

The product of its digits is 2400, while the sum is 23.

The square root of 543542 is about 737.2530094886. The cubic root of 543542 is about 81.6101863165.

Adding to 543542 its reverse (245345), we get a palindrome (788887).

The spelling of 543542 in words is "five hundred forty-three thousand, five hundred forty-two".