243432129 has 32 divisors (see below), whose sum is σ = 359686656. Its totient is φ = 145786880.

The previous prime is 243432121. The next prime is 243432173. The reversal of 243432129 is 921234342.

It is a cyclic number.

It is not a de Polignac number, because 243432129 - 2³ = 243432121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243432096 and 243432105.

It is not an unprimeable number, because it can be changed into a prime (243432121) 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 31 ways as a sum of consecutive naturals, for example, 97039 + ... + 99515.

It is an arithmetic number, because the mean of its divisors is an integer number (11240208).

Almost surely, 2^243432129 is an apocalyptic number.

It is an amenable number.

243432129 is a deficient number, since it is larger than the sum of its proper divisors (116254527).

243432129 is a wasteful number, since it uses less digits than its factorization.

243432129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585.

The product of its digits is 10368, while the sum is 30.

The square root of 243432129 is about 15602.3116556490. The cubic root of 243432129 is about 624.3948309685.

The spelling of 243432129 in words is "two hundred forty-three million, four hundred thirty-two thousand, one hundred twenty-nine".