423434242 has 16 divisors (see below), whose sum is σ = 791877312. Its totient is φ = 164974320.

The previous prime is 423434227. The next prime is 423434243. The reversal of 423434242 is 242434324.

It is a happy number.

It is a super-2 number, since 2×423434242² = 358593114596229128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 423434242.

It is not an unprimeable number, because it can be changed into a prime (423434243) 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 7 ways as a sum of consecutive naturals, for example, 1374633 + ... + 1374940.

It is an arithmetic number, because the mean of its divisors is an integer number (49492332).

Almost surely, 2^423434242 is an apocalyptic number.

423434242 is a deficient number, since it is larger than the sum of its proper divisors (368443070).

423434242 is a wasteful number, since it uses less digits than its factorization.

423434242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749593.

The product of its digits is 18432, while the sum is 28.

The square root of 423434242 is about 20577.5178775284. The cubic root of 423434242 is about 750.9228592346.

Adding to 423434242 its reverse (242434324), we get a palindrome (665868566).

The spelling of 423434242 in words is "four hundred twenty-three million, four hundred thirty-four thousand, two hundred forty-two".