542056 has 8 divisors (see below), whose sum is σ = 1016370. Its totient is φ = 271024.

The previous prime is 542053. The next prime is 542063. The reversal of 542056 is 650245.

It can be written as a sum of positive squares in only one way, i.e., 324900 + 217156 = 570^2 + 466^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (542053) 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 as a sum of consecutive naturals, namely, 33871 + ... + 33886.

2⁵⁴²⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

542056 is a deficient number, since it is larger than the sum of its proper divisors (474314).

542056 is a wasteful number, since it uses less digits than its factorization.

542056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67763 (or 67759 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 542056 is about 736.2445245976. The cubic root of 542056 is about 81.5357465482.

It can be divided in two parts, 5420 and 56, that added together give a square (5476 = 74²).

The spelling of 542056 in words is "five hundred forty-two thousand, fifty-six".