542826 has 24 divisors (see below), whose sum is σ = 1200420. Its totient is φ = 177216.

The previous prime is 542821. The next prime is 542831. The reversal of 542826 is 628245.

It is an interprime number because it is at equal distance from previous prime (542821) and next prime (542831).

It can be written as a sum of positive squares in 2 ways, for example, as 540225 + 2601 = 735^2 + 51^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 542826.

It is not an unprimeable number, because it can be changed into a prime (542821) 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 11 ways as a sum of consecutive naturals, for example, 670 + ... + 1238.

2⁵⁴²⁸²⁶ is an apocalyptic number.

542826 is an abundant number, since it is smaller than the sum of its proper divisors (657594).

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

542826 is a wasteful number, since it uses less digits than its factorization.

542826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630 (or 627 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 542826 is about 736.7672631164. The cubic root of 542826 is about 81.5743359315.

The spelling of 542826 in words is "five hundred forty-two thousand, eight hundred twenty-six".