423220242 has 16 divisors (see below), whose sum is σ = 864450432. Its totient is φ = 138071760.

The previous prime is 423220223. The next prime is 423220247. The reversal of 423220242 is 242022324.

It is not an unprimeable number, because it can be changed into a prime (423220247) 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 7 ways as a sum of consecutive naturals, for example, 750109 + ... + 750672.

It is an arithmetic number, because the mean of its divisors is an integer number (54028152).

Almost surely, 2^423220242 is an apocalyptic number.

423220242 is an abundant number, since it is smaller than the sum of its proper divisors (441230190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423220242 is a wasteful number, since it uses less digits than its factorization.

423220242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500833.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 423220242 is about 20572.3173706804. The cubic root of 423220242 is about 750.7963346134.

Adding to 423220242 its reverse (242022324), we get a palindrome (665242566).

The spelling of 423220242 in words is "four hundred twenty-three million, two hundred twenty thousand, two hundred forty-two".