542689193 has 6 divisors (see below), whose sum is σ = 560761002. Its totient is φ = 525182160.

The previous prime is 542689187. The next prime is 542689211. The reversal of 542689193 is 391986245.

It can be written as a sum of positive squares in only one way, i.e., 460188304 + 82500889 = 21452^2 + 9083^2 .

It is not a de Polignac number, because 542689193 - 2⁶ = 542689129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542682193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 281396 + ... + 283317.

It is an arithmetic number, because the mean of its divisors is an integer number (93460167).

Almost surely, 2^542689193 is an apocalyptic number.

It is an amenable number.

542689193 is a deficient number, since it is larger than the sum of its proper divisors (18071809).

542689193 is an equidigital number, since it uses as much as digits as its factorization.

542689193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564775 (or 564744 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 542689193 is about 23295.6904383622. The cubic root of 542689193 is about 815.6748236775.

The spelling of 542689193 in words is "five hundred forty-two million, six hundred eighty-nine thousand, one hundred ninety-three".