840223424 has 28 divisors (see below), whose sum is σ = 1671447000. Its totient is φ = 419071488.

The previous prime is 840223421. The next prime is 840223429. The reversal of 840223424 is 424322048.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (840223421) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10127 + ... + 42225.

Almost surely, 2^840223424 is an apocalyptic number.

It is an amenable number.

840223424 is a deficient number, since it is larger than the sum of its proper divisors (831223576).

840223424 is a wasteful number, since it uses less digits than its factorization.

840223424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32520 (or 32510 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

The square root of 840223424 is about 28986.6076663000. The cubic root of 840223424 is about 943.6224430968.

The spelling of 840223424 in words is "eight hundred forty million, two hundred twenty-three thousand, four hundred twenty-four".