542709 has 12 divisors (see below), whose sum is σ = 801216. Its totient is φ = 353832.

The previous prime is 542693. The next prime is 542713. The reversal of 542709 is 907245.

It is not a de Polignac number, because 542709 - 2⁴ = 542693 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 219 + ... + 1064.

It is an arithmetic number, because the mean of its divisors is an integer number (66768).

2⁵⁴²⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

542709 is a deficient number, since it is larger than the sum of its proper divisors (258507).

542709 is a wasteful number, since it uses less digits than its factorization.

542709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336 (or 1333 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 542709 is about 736.6878579154. The cubic root of 542709 is about 81.5684747021.

The spelling of 542709 in words is "five hundred forty-two thousand, seven hundred nine".