542667239 has 2 divisors, whose sum is σ = 542667240. Its totient is φ = 542667238.

The previous prime is 542667211. The next prime is 542667241. The reversal of 542667239 is 932766245.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 542667239 - 2⁸ = 542666983 is a prime.

It is a Sophie Germain prime.

Together with 542667241, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 542667239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542667269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271333619 + 271333620.

It is an arithmetic number, because the mean of its divisors is an integer number (271333620).

Almost surely, 2^542667239 is an apocalyptic number.

542667239 is a deficient number, since it is larger than the sum of its proper divisors (1).

542667239 is an equidigital number, since it uses as much as digits as its factorization.

542667239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 44.

The square root of 542667239 is about 23295.2192305632. The cubic root of 542667239 is about 815.6638244003.

The spelling of 542667239 in words is "five hundred forty-two million, six hundred sixty-seven thousand, two hundred thirty-nine".