404243000 has 256 divisors, whose sum is σ = 1186099200. Its totient is φ = 125798400.

The previous prime is 404242999. The next prime is 404243003. The reversal of 404243000 is 342404.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 404243000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404243003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5116961 + ... + 5117039.

It is an arithmetic number, because the mean of its divisors is an integer number (4633200).

Almost surely, 2^404243000 is an apocalyptic number.

404243000 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 404243000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (593049600).

404243000 is an abundant number, since it is smaller than the sum of its proper divisors (781856200).

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

404243000 is a wasteful number, since it uses less digits than its factorization.

404243000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 404243000 is about 20105.7951844736. The cubic root of 404243000 is about 739.4023662678.

Adding to 404243000 its reverse (342404), we get a palindrome (404585404).

The spelling of 404243000 in words is "four hundred four million, two hundred forty-three thousand".