542206209 has 16 divisors (see below), whose sum is σ = 757066752. Its totient is φ = 344520528.

The previous prime is 542206199. The next prime is 542206219. The reversal of 542206209 is 902602245.

It is an interprime number because it is at equal distance from previous prime (542206199) and next prime (542206219).

It is not a de Polignac number, because 542206209 - 2⁴ = 542206193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (542206219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5644 + ... + 33410.

It is an arithmetic number, because the mean of its divisors is an integer number (47316672).

Almost surely, 2^542206209 is an apocalyptic number.

It is an amenable number.

542206209 is a deficient number, since it is larger than the sum of its proper divisors (214860543).

542206209 is a wasteful number, since it uses less digits than its factorization.

542206209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28076.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 542206209 is about 23285.3217499780. The cubic root of 542206209 is about 815.4327730256.

The spelling of 542206209 in words is "five hundred forty-two million, two hundred six thousand, two hundred nine".