243426465 has 24 divisors (see below), whose sum is σ = 437568768. Its totient is φ = 129826800.

The previous prime is 243426431. The next prime is 243426473. The reversal of 243426465 is 564624342.

243426465 is a `hidden beast` number, since 2 + 4 + 3 + 4 + 2 + 646 + 5 = 666.

It is not a de Polignac number, because 243426465 - 2⁹ = 243425953 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 98961 + ... + 101390.

It is an arithmetic number, because the mean of its divisors is an integer number (18232032).

Almost surely, 2^243426465 is an apocalyptic number.

It is an amenable number.

243426465 is a deficient number, since it is larger than the sum of its proper divisors (194142303).

243426465 is an equidigital number, since it uses as much as digits as its factorization.

243426465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200371 (or 200359 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

The square root of 243426465 is about 15602.1301430285. The cubic root of 243426465 is about 624.3899882775.

The spelling of 243426465 in words is "two hundred forty-three million, four hundred twenty-six thousand, four hundred sixty-five".