542541 has 4 divisors (see below), whose sum is σ = 723392. Its totient is φ = 361692.

The previous prime is 542539. The next prime is 542551. The reversal of 542541 is 145245.

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 not a de Polignac number, because 542541 - 2¹ = 542539 is a prime.

It is a D-number.

It is a Duffinian number.

542541 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542551) 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, 90421 + ... + 90426.

It is an arithmetic number, because the mean of its divisors is an integer number (180848).

2⁵⁴²⁵⁴¹ is an apocalyptic number.

It is an amenable number.

542541 is a deficient number, since it is larger than the sum of its proper divisors (180851).

542541 is a wasteful number, since it uses less digits than its factorization.

542541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180850.

The product of its digits is 800, while the sum is 21.

The square root of 542541 is about 736.5738252205. The cubic root of 542541 is about 81.5600571045.

Adding to 542541 its reverse (145245), we get a palindrome (687786).

The spelling of 542541 in words is "five hundred forty-two thousand, five hundred forty-one".