423324140 has 48 divisors (see below), whose sum is σ = 956751264. Its totient is φ = 156748800.

The previous prime is 423324137. The next prime is 423324149. The reversal of 423324140 is 41423324.

It is not an unprimeable number, because it can be changed into a prime (423324149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10535 + ... + 30945.

It is an arithmetic number, because the mean of its divisors is an integer number (19932318).

Almost surely, 2^423324140 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 423324140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (478375632).

423324140 is an abundant number, since it is smaller than the sum of its proper divisors (533427124).

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

423324140 is a wasteful number, since it uses less digits than its factorization.

423324140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20498 (or 20496 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 423324140 is about 20574.8424052288. The cubic root of 423324140 is about 750.8577682338.

Adding to 423324140 its reverse (41423324), we get a palindrome (464747464).

The spelling of 423324140 in words is "four hundred twenty-three million, three hundred twenty-four thousand, one hundred forty".