421040000 has 160 divisors (see below), whose sum is σ = 1107301800. Its totient is φ = 158976000.

The previous prime is 421039991. The next prime is 421040017. The reversal of 421040000 is 40124.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1519862 + ... + 1520138.

Almost surely, 2^421040000 is an apocalyptic number.

421040000 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 421040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (553650900).

421040000 is an abundant number, since it is smaller than the sum of its proper divisors (686261800).

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

421040000 is an equidigital number, since it uses as much as digits as its factorization.

421040000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 421040000 is about 20519.2592458890. The cubic root of 421040000 is about 749.5048583701.

Adding to 421040000 its reverse (40124), we get a palindrome (421080124).

The spelling of 421040000 in words is "four hundred twenty-one million, forty thousand".