542609873 has 8 divisors (see below), whose sum is σ = 588273000. Its totient is φ = 497507328.

The previous prime is 542609869. The next prime is 542609929. The reversal of 542609873 is 378906245.

It can be written as a sum of positive squares in 4 ways, for example, as 2140369 + 540469504 = 1463^2 + 23248^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 542609873 - 2² = 542609869 is a prime.

It is a super-2 number, since 2×542609873² = 588850948554152258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542600873) 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 7 ways as a sum of consecutive naturals, for example, 138128 + ... + 142001.

It is an arithmetic number, because the mean of its divisors is an integer number (73534125).

Almost surely, 2^542609873 is an apocalyptic number.

It is an amenable number.

542609873 is a deficient number, since it is larger than the sum of its proper divisors (45663127).

542609873 is a wasteful number, since it uses less digits than its factorization.

542609873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280291.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 542609873 is about 23293.9879153399. The cubic root of 542609873 is about 815.6350817894.

The spelling of 542609873 in words is "five hundred forty-two million, six hundred nine thousand, eight hundred seventy-three".