542424209 has 2 divisors, whose sum is σ = 542424210. Its totient is φ = 542424208.

The previous prime is 542424199. The next prime is 542424247. The reversal of 542424209 is 902424245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 295840000 + 246584209 = 17200^2 + 15703^2 .

It is a cyclic number.

It is not a de Polignac number, because 542424209 - 2⁸ = 542423953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (542424109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271212104 + 271212105.

It is an arithmetic number, because the mean of its divisors is an integer number (271212105).

Almost surely, 2^542424209 is an apocalyptic number.

It is an amenable number.

542424209 is a deficient number, since it is larger than the sum of its proper divisors (1).

542424209 is an equidigital number, since it uses as much as digits as its factorization.

542424209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 542424209 is about 23290.0023400600. The cubic root of 542424209 is about 815.5420429693.

The spelling of 542424209 in words is "five hundred forty-two million, four hundred twenty-four thousand, two hundred nine".