243382129 has 4 divisors (see below), whose sum is σ = 244008180. Its totient is φ = 242756080.

The previous prime is 243382091. The next prime is 243382133. The reversal of 243382129 is 921283342.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 127238400 + 116143729 = 11280^2 + 10777^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243382129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243382094 and 243382103.

It is not an unprimeable number, because it can be changed into a prime (243382169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312442 + ... + 313219.

It is an arithmetic number, because the mean of its divisors is an integer number (61002045).

Almost surely, 2^243382129 is an apocalyptic number.

It is an amenable number.

243382129 is a deficient number, since it is larger than the sum of its proper divisors (626051).

243382129 is an equidigital number, since it uses as much as digits as its factorization.

243382129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626050.

The product of its digits is 20736, while the sum is 34.

The square root of 243382129 is about 15600.7092466977. The cubic root of 243382129 is about 624.3520786287.

The spelling of 243382129 in words is "two hundred forty-three million, three hundred eighty-two thousand, one hundred twenty-nine".