542109 has 8 divisors (see below), whose sum is σ = 728640. Its totient is φ = 358496.

The previous prime is 542093. The next prime is 542111. The reversal of 542109 is 901245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 542109 - 2⁴ = 542093 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 (542119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249 + ... + 1070.

It is an arithmetic number, because the mean of its divisors is an integer number (91080).

2⁵⁴²¹⁰⁹ is an apocalyptic number.

It is an amenable number.

542109 is a deficient number, since it is larger than the sum of its proper divisors (186531).

542109 is a wasteful number, since it uses less digits than its factorization.

542109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 542109 is about 736.2805171944. The cubic root of 542109 is about 81.5384038712.

The spelling of 542109 in words is "five hundred forty-two thousand, one hundred nine".