542239 has 8 divisors (see below), whose sum is σ = 564480. Its totient is φ = 520536.

The previous prime is 542237. The next prime is 542251. The reversal of 542239 is 932245.

It is a happy number.

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 542239 - 2¹ = 542237 is a prime.

It is a d-powerful number, because it can be written as 5⁵ + 4³ + 2¹³ + 2¹⁹ + 3⁸ + 9 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542237) 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, 3832 + ... + 3970.

It is an arithmetic number, because the mean of its divisors is an integer number (70560).

2⁵⁴²²³⁹ is an apocalyptic number.

542239 is a deficient number, since it is larger than the sum of its proper divisors (22241).

542239 is a wasteful number, since it uses less digits than its factorization.

542239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269.

The product of its digits is 2160, while the sum is 25.

The square root of 542239 is about 736.3687934724. The cubic root of 542239 is about 81.5449211001.

The spelling of 542239 in words is "five hundred forty-two thousand, two hundred thirty-nine".