542497 has 2 divisors, whose sum is σ = 542498. Its totient is φ = 542496.

The previous prime is 542489. The next prime is 542519. The reversal of 542497 is 794245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 484416 + 58081 = 696^2 + 241^2 .

It is a cyclic number.

It is not a de Polignac number, because 542497 - 2³ = 542489 is a prime.

It is not a weakly prime, because it can be changed into another prime (542447) 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 as a sum of consecutive naturals, namely, 271248 + 271249.

It is an arithmetic number, because the mean of its divisors is an integer number (271249).

2⁵⁴²⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

542497 is a deficient number, since it is larger than the sum of its proper divisors (1).

542497 is an equidigital number, since it uses as much as digits as its factorization.

542497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 542497 is about 736.5439565973. The cubic root of 542497 is about 81.5578522084.

The spelling of 542497 in words is "five hundred forty-two thousand, four hundred ninety-seven".