423244240 has 80 divisors (see below), whose sum is σ = 1075645440. Its totient is φ = 154183680.

The previous prime is 423244231. The next prime is 423244253. The reversal of 423244240 is 42442324.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 37141 + ... + 47179.

It is an arithmetic number, because the mean of its divisors is an integer number (13445568).

Almost surely, 2^423244240 is an apocalyptic number.

423244240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423244240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (537822720).

423244240 is an abundant number, since it is smaller than the sum of its proper divisors (652401200).

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

423244240 is a wasteful number, since it uses less digits than its factorization.

423244240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10100 (or 10094 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 423244240 is about 20572.9006219347. The cubic root of 423244240 is about 750.8105252311.

Adding to 423244240 its reverse (42442324), we get a palindrome (465686564).

It can be divided in two parts, 42324 and 4240, that added together give a palindrome (46564).

The spelling of 423244240 in words is "four hundred twenty-three million, two hundred forty-four thousand, two hundred forty".