243542166 has 16 divisors (see below), whose sum is σ = 556667904. Its totient is φ = 69583464.

The previous prime is 243542093. The next prime is 243542207. The reversal of 243542166 is 661245342.

It is a super-3 number, since 3×243542166³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2899270 + ... + 2899353.

It is an arithmetic number, because the mean of its divisors is an integer number (34791744).

Almost surely, 2^243542166 is an apocalyptic number.

243542166 is an abundant number, since it is smaller than the sum of its proper divisors (313125738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243542166 is a wasteful number, since it uses less digits than its factorization.

243542166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5798635.

The product of its digits is 34560, while the sum is 33.

The square root of 243542166 is about 15605.8375616306. The cubic root of 243542166 is about 624.4888971388.

The spelling of 243542166 in words is "two hundred forty-three million, five hundred forty-two thousand, one hundred sixty-six".