243402143 has 8 divisors (see below), whose sum is σ = 249878208. Its totient is φ = 236980224.

The previous prime is 243402121. The next prime is 243402149. The reversal of 243402143 is 341204342.

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 243402143 - 2¹⁴ = 243385759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243402149) 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, 4346 + ... + 22487.

It is an arithmetic number, because the mean of its divisors is an integer number (31234776).

Almost surely, 2^243402143 is an apocalyptic number.

243402143 is a deficient number, since it is larger than the sum of its proper divisors (6476065).

243402143 is a wasteful number, since it uses less digits than its factorization.

243402143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27073.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 243402143 is about 15601.3506787073. The cubic root of 243402143 is about 624.3691922380.

Adding to 243402143 its reverse (341204342), we get a palindrome (584606485).

The spelling of 243402143 in words is "two hundred forty-three million, four hundred two thousand, one hundred forty-three".