542447 has 2 divisors, whose sum is σ = 542448. Its totient is φ = 542446.

The previous prime is 542441. The next prime is 542461. The reversal of 542447 is 744245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542447 - 2¹⁴ = 526063 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271223 + 271224.

It is an arithmetic number, because the mean of its divisors is an integer number (271224).

2⁵⁴²⁴⁴⁷ is an apocalyptic number.

542447 is a deficient number, since it is larger than the sum of its proper divisors (1).

542447 is an equidigital number, since it uses as much as digits as its factorization.

542447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 26.

The square root of 542447 is about 736.5100135097. The cubic root of 542447 is about 81.5553465000. Note that the first 3 decimals are identical.

It can be divided in two parts, 542 and 447, that added together give a palindrome (989).

The spelling of 542447 in words is "five hundred forty-two thousand, four hundred forty-seven".