243402055 has 8 divisors (see below), whose sum is σ = 314550432. Its totient is φ = 179743008.

The previous prime is 243402053. The next prime is 243402067. The reversal of 243402055 is 550204342.

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 243402055 - 2¹ = 243402053 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 (243402053) by changing a digit.

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, 1872259 + ... + 1872388.

It is an arithmetic number, because the mean of its divisors is an integer number (39318804).

Almost surely, 2^243402055 is an apocalyptic number.

243402055 is a deficient number, since it is larger than the sum of its proper divisors (71148377).

243402055 is a wasteful number, since it uses less digits than its factorization.

243402055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3744665.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 243402055 is about 15601.3478584384. The cubic root of 243402055 is about 624.3691169929.

Adding to 243402055 its reverse (550204342), we get a palindrome (793606397).

The spelling of 243402055 in words is "two hundred forty-three million, four hundred two thousand, fifty-five".