204542541 has 12 divisors (see below), whose sum is σ = 337657632. Its totient is φ = 116881416.

The previous prime is 204542431. The next prime is 204542573. The reversal of 204542541 is 145245402.

It is not a de Polignac number, because 204542541 - 2⁹ = 204542029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204542141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1623291 + ... + 1623416.

It is an arithmetic number, because the mean of its divisors is an integer number (28138136).

Almost surely, 2^204542541 is an apocalyptic number.

204542541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

204542541 is a deficient number, since it is larger than the sum of its proper divisors (133115091).

204542541 is a wasteful number, since it uses less digits than its factorization.

204542541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246720 (or 3246717 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 204542541 is about 14301.8369799128. The cubic root of 204542541 is about 589.1979343661.

Adding to 204542541 its reverse (145245402), we get a palindrome (349787943).

The spelling of 204542541 in words is "two hundred four million, five hundred forty-two thousand, five hundred forty-one".