542675209 has 2 divisors, whose sum is σ = 542675210. Its totient is φ = 542675208.

The previous prime is 542675201. The next prime is 542675213. The reversal of 542675209 is 902576245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 499075600 + 43599609 = 22340^2 + 6603^2 .

It is a cyclic number.

It is not a de Polignac number, because 542675209 - 2³ = 542675201 is a prime.

It is not a weakly prime, because it can be changed into another prime (542675201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271337604 + 271337605.

It is an arithmetic number, because the mean of its divisors is an integer number (271337605).

Almost surely, 2^542675209 is an apocalyptic number.

It is an amenable number.

542675209 is a deficient number, since it is larger than the sum of its proper divisors (1).

542675209 is an equidigital number, since it uses as much as digits as its factorization.

542675209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 542675209 is about 23295.3902950777. The cubic root of 542675209 is about 815.6678175219.

The spelling of 542675209 in words is "five hundred forty-two million, six hundred seventy-five thousand, two hundred nine".