542540205 has 24 divisors (see below), whose sum is σ = 954444192. Its totient is φ = 285034464.

The previous prime is 542540203. The next prime is 542540237. The reversal of 542540205 is 502045245.

It is not a de Polignac number, because 542540205 - 2¹ = 542540203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542540203) 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, 86959 + ... + 92988.

It is an arithmetic number, because the mean of its divisors is an integer number (39768508).

Almost surely, 2^542540205 is an apocalyptic number.

It is an amenable number.

542540205 is a deficient number, since it is larger than the sum of its proper divisors (411903987).

542540205 is a wasteful number, since it uses less digits than its factorization.

542540205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180025 (or 180022 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 542540205 is about 23292.4924600181. The cubic root of 542540205 is about 815.6001726710.

The spelling of 542540205 in words is "five hundred forty-two million, five hundred forty thousand, two hundred five".