404143230 has 64 divisors (see below), whose sum is σ = 999482688. Its totient is φ = 104509440.

The previous prime is 404143213. The next prime is 404143237. The reversal of 404143230 is 32341404.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 404143197 and 404143206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404143237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 600174 + ... + 600846.

It is an arithmetic number, because the mean of its divisors is an integer number (15616917).

Almost surely, 2^404143230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404143230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (499741344).

404143230 is an abundant number, since it is smaller than the sum of its proper divisors (595339458).

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

404143230 is a wasteful number, since it uses less digits than its factorization.

404143230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 404143230 is about 20103.3139059211. The cubic root of 404143230 is about 739.3415313707.

Adding to 404143230 its reverse (32341404), we get a palindrome (436484634).

The spelling of 404143230 in words is "four hundred four million, one hundred forty-three thousand, two hundred thirty".