542726 has 4 divisors (see below), whose sum is σ = 814092. Its totient is φ = 271362.

The previous prime is 542723. The next prime is 542747. The reversal of 542726 is 627245.

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

It is a super-2 number, since 2×542726² = 589103022152, which contains 22 as substring.

It is a d-powerful number, because it can be written as 5³ + 4⁹ + 7 + 2 + 2⁹ + 6⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 542695 and 542704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542723) by changing a digit.

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 as a sum of consecutive naturals, namely, 135680 + ... + 135683.

It is an arithmetic number, because the mean of its divisors is an integer number (203523).

2⁵⁴²⁷²⁶ is an apocalyptic number.

542726 is a deficient number, since it is larger than the sum of its proper divisors (271366).

542726 is a wasteful number, since it uses less digits than its factorization.

542726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271365.

The product of its digits is 3360, while the sum is 26.

The square root of 542726 is about 736.6993959547. The cubic root of 542726 is about 81.5693263861.

The spelling of 542726 in words is "five hundred forty-two thousand, seven hundred twenty-six".