542026 has 4 divisors (see below), whose sum is σ = 813042. Its totient is φ = 271012.

The previous prime is 542023. The next prime is 542027. The reversal of 542026 is 620245.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 491401 + 50625 = 701^2 + 225^2 .

It is a junction number, because it is equal to n+sod(n) for n = 541994 and 542012.

It is not an unprimeable number, because it can be changed into a prime (542021) 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, 135505 + ... + 135508.

2⁵⁴²⁰²⁶ is an apocalyptic number.

542026 is a deficient number, since it is larger than the sum of its proper divisors (271016).

542026 is a wasteful number, since it uses less digits than its factorization.

542026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271015.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 542026 is about 736.2241506498. The cubic root of 542026 is about 81.5342423262.

It can be divided in two parts, 54 and 2026, that added together give a triangular number (2080 = T₆₄).

The spelling of 542026 in words is "five hundred forty-two thousand, twenty-six".