423242344 has 64 divisors (see below), whose sum is σ = 933528960. Its totient is φ = 176117760.

The previous prime is 423242333. The next prime is 423242363. The reversal of 423242344 is 443242324.

It is a happy number.

It is a super-2 number, since 2×423242344² = 358268163509228672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 773479 + ... + 774025.

It is an arithmetic number, because the mean of its divisors is an integer number (14586390).

Almost surely, 2^423242344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423242344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466764480).

423242344 is an abundant number, since it is smaller than the sum of its proper divisors (510286616).

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

423242344 is a wasteful number, since it uses less digits than its factorization.

423242344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938 (or 934 counting only the distinct ones).

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

The square root of 423242344 is about 20572.8545418471. The cubic root of 423242344 is about 750.8094040984.

Adding to 423242344 its reverse (443242324), we get a palindrome (866484668).

The spelling of 423242344 in words is "four hundred twenty-three million, two hundred forty-two thousand, three hundred forty-four".