542128 has 20 divisors (see below), whose sum is σ = 1085248. Its totient is φ = 262080.

The previous prime is 542123. The next prime is 542131. The reversal of 542128 is 821245.

542128 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 542099 and 542108.

It is not an unprimeable number, because it can be changed into a prime (542123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51 + ... + 1042.

2⁵⁴²¹²⁸ is an apocalyptic number.

It is an amenable number.

542128 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

542128 is a wasteful number, since it uses less digits than its factorization.

542128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132 (or 1126 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 542128 is about 736.2934197723. The cubic root of 542128 is about 81.5393564543.

The spelling of 542128 in words is "five hundred forty-two thousand, one hundred twenty-eight".