421136000 has 64 divisors (see below), whose sum is σ = 1047089160. Its totient is φ = 168448000.

The previous prime is 421135991. The next prime is 421136021. The reversal of 421136000 is 631124.

It can be written as a sum of positive squares in 4 ways, for example, as 234212416 + 186923584 = 15304^2 + 13672^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 421136000.

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, 2840 + ... + 29160.

Almost surely, 2^421136000 is an apocalyptic number.

421136000 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 421136000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (523544580).

421136000 is an abundant number, since it is smaller than the sum of its proper divisors (625953160).

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

421136000 is an equidigital number, since it uses as much as digits as its factorization.

421136000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26350 (or 26328 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 421136000 is about 20521.5983782940. The cubic root of 421136000 is about 749.5618181194.

Adding to 421136000 its reverse (631124), we get a palindrome (421767124).

The spelling of 421136000 in words is "four hundred twenty-one million, one hundred thirty-six thousand".