423243965 has 16 divisors (see below), whose sum is σ = 513451008. Its totient is φ = 334910976.

The previous prime is 423243941. The next prime is 423243971. The reversal of 423243965 is 569342324.

It is a cyclic number.

It is not a de Polignac number, because 423243965 - 2¹⁸ = 422981821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185069 + ... + 187341.

It is an arithmetic number, because the mean of its divisors is an integer number (32090688).

Almost surely, 2^423243965 is an apocalyptic number.

It is an amenable number.

423243965 is a deficient number, since it is larger than the sum of its proper divisors (90207043).

423243965 is a wasteful number, since it uses less digits than its factorization.

423243965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668.

The product of its digits is 155520, while the sum is 38.

The square root of 423243965 is about 20572.8939383841. The cubic root of 423243965 is about 750.8103626197.

The spelling of 423243965 in words is "four hundred twenty-three million, two hundred forty-three thousand, nine hundred sixty-five".