423001424 has 40 divisors (see below), whose sum is σ = 851229000. Its totient is φ = 203388416.

The previous prime is 423001409. The next prime is 423001451. The reversal of 423001424 is 424100324.

It can be written as a sum of positive squares in 4 ways, for example, as 79566400 + 343435024 = 8920^2 + 18532^2 .

It is a junction number, because it is equal to n+sod(n) for n = 423001396 and 423001405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123122 + ... + 126510.

It is an arithmetic number, because the mean of its divisors is an integer number (21280725).

Almost surely, 2^423001424 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 423001424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (425614500).

423001424 is an abundant number, since it is smaller than the sum of its proper divisors (428227576).

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

423001424 is a wasteful number, since it uses less digits than its factorization.

423001424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3695 (or 3689 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 423001424 is about 20566.9984197986. The cubic root of 423001424 is about 750.6669173045. Note that the first 3 decimals are identical.

Adding to 423001424 its reverse (424100324), we get a palindrome (847101748).

The spelling of 423001424 in words is "four hundred twenty-three million, one thousand, four hundred twenty-four".