542831 has 2 divisors, whose sum is σ = 542832. Its totient is φ = 542830.

The previous prime is 542821. The next prime is 542837. The reversal of 542831 is 138245.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542831 is a prime.

It is a super-2 number, since 2×542831² = 589330989122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 5⁵ + 4³ + 8 + 2¹³ + 3¹² + 1 .

It is a junction number, because it is equal to n+sod(n) for n = 542797 and 542806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271415 + 271416.

It is an arithmetic number, because the mean of its divisors is an integer number (271416).

2⁵⁴²⁸³¹ is an apocalyptic number.

542831 is a deficient number, since it is larger than the sum of its proper divisors (1).

542831 is an equidigital number, since it uses as much as digits as its factorization.

542831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 23.

The square root of 542831 is about 736.7706563104. The cubic root of 542831 is about 81.5745863927.

The spelling of 542831 in words is "five hundred forty-two thousand, eight hundred thirty-one".