423243441 has 16 divisors (see below), whose sum is σ = 663912000. Its totient is φ = 265564224.

The previous prime is 423243433. The next prime is 423243511. The reversal of 423243441 is 144342324.

It is a happy number.

It is not a de Polignac number, because 423243441 - 2³ = 423243433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (423243241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460591 + ... + 461508.

It is an arithmetic number, because the mean of its divisors is an integer number (41494500).

Almost surely, 2^423243441 is an apocalyptic number.

It is an amenable number.

423243441 is a deficient number, since it is larger than the sum of its proper divisors (240668559).

423243441 is a wasteful number, since it uses less digits than its factorization.

423243441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922125 (or 922119 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 423243441 is about 20572.8812031762. The cubic root of 423243441 is about 750.8100527710.

Adding to 423243441 its reverse (144342324), we get a palindrome (567585765).

The spelling of 423243441 in words is "four hundred twenty-three million, two hundred forty-three thousand, four hundred forty-one".