542489 has 2 divisors, whose sum is σ = 542490. Its totient is φ = 542488.

The previous prime is 542483. The next prime is 542497. The reversal of 542489 is 984245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 462400 + 80089 = 680^2 + 283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (542483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271244 + 271245.

It is an arithmetic number, because the mean of its divisors is an integer number (271245).

2⁵⁴²⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

542489 is a deficient number, since it is larger than the sum of its proper divisors (1).

542489 is an equidigital number, since it uses as much as digits as its factorization.

542489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 32.

The square root of 542489 is about 736.5385258084. The cubic root of 542489 is about 81.5574513054.

The spelling of 542489 in words is "five hundred forty-two thousand, four hundred eighty-nine".