542453209 has 2 divisors, whose sum is σ = 542453210. Its totient is φ = 542453208.

The previous prime is 542453161. The next prime is 542453227. The reversal of 542453209 is 902354245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 447195609 + 95257600 = 21147^2 + 9760^2 .

It is a cyclic number.

It is not a de Polignac number, because 542453209 - 2⁷ = 542453081 is a prime.

It is not a weakly prime, because it can be changed into another prime (542453269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271226604 + 271226605.

It is an arithmetic number, because the mean of its divisors is an integer number (271226605).

Almost surely, 2^542453209 is an apocalyptic number.

It is an amenable number.

542453209 is a deficient number, since it is larger than the sum of its proper divisors (1).

542453209 is an equidigital number, since it uses as much as digits as its factorization.

542453209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 542453209 is about 23290.6249164766. The cubic root of 542453209 is about 815.5565766727.

The spelling of 542453209 in words is "five hundred forty-two million, four hundred fifty-three thousand, two hundred nine".