542431999 has 2 divisors, whose sum is σ = 542432000. Its totient is φ = 542431998.

The previous prime is 542431997. The next prime is 542432021. The reversal of 542431999 is 999134245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542431999 - 2¹ = 542431997 is a prime.

Together with 542431997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542431993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271215999 + 271216000.

It is an arithmetic number, because the mean of its divisors is an integer number (271216000).

Almost surely, 2^542431999 is an apocalyptic number.

542431999 is a deficient number, since it is larger than the sum of its proper divisors (1).

542431999 is an equidigital number, since it uses as much as digits as its factorization.

542431999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 46.

The square root of 542431999 is about 23290.1695786012. The cubic root of 542431999 is about 815.5459470736.

The spelling of 542431999 in words is "five hundred forty-two million, four hundred thirty-one thousand, nine hundred ninety-nine".