542730 has 32 divisors (see below), whose sum is σ = 1324800. Its totient is φ = 142272.

The previous prime is 542723. The next prime is 542747. The reversal of 542730 is 37245.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 542697 and 542706.

It is a congruent number.

It is an unprimeable number.

542730 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2256 + ... + 2484.

It is an arithmetic number, because the mean of its divisors is an integer number (41400).

2⁵⁴²⁷³⁰ is an apocalyptic number.

542730 is an abundant number, since it is smaller than the sum of its proper divisors (782070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

542730 is a wasteful number, since it uses less digits than its factorization.

542730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 542730 is about 736.7021107612. The cubic root of 542730 is about 81.5695267797.

Adding to 542730 its reverse (37245), we get a palindrome (579975).

The spelling of 542730 in words is "five hundred forty-two thousand, seven hundred thirty".