423144500 has 48 divisors (see below), whose sum is σ = 936887952. Its totient is φ = 166924800.

The previous prime is 423144499. The next prime is 423144503. The reversal of 423144500 is 5441324.

It can be written as a sum of positive squares in 8 ways, for example, as 34739236 + 388405264 = 5894^2 + 19708^2 .

It is a super-3 number, since 3×423144500³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423144503) 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 15 ways as a sum of consecutive naturals, for example, 30704 + ... + 42296.

It is an arithmetic number, because the mean of its divisors is an integer number (19518499).

Almost surely, 2^423144500 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 423144500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468443976).

423144500 is an abundant number, since it is smaller than the sum of its proper divisors (513743452).

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

423144500 is a wasteful number, since it uses less digits than its factorization.

423144500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11685 (or 11673 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 423144500 is about 20570.4764164567. The cubic root of 423144500 is about 750.7515429557.

Adding to 423144500 its reverse (5441324), we get a palindrome (428585824).

The spelling of 423144500 in words is "four hundred twenty-three million, one hundred forty-four thousand, five hundred".