40421100 has 72 divisors (see below), whose sum is σ = 118756288. Its totient is φ = 10612800.

The previous prime is 40421093. The next prime is 40421123. The reversal of 40421100 is 112404.

40421100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19095 + ... + 21105.

Almost surely, 2^40421100 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 40421100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59378144).

40421100 is an abundant number, since it is smaller than the sum of its proper divisors (78335188).

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

40421100 is a wasteful number, since it uses less digits than its factorization.

40421100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095 (or 2088 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 40421100 is about 6357.7590391584. The cubic root of 40421100 is about 343.1911204988.

Adding to 40421100 its reverse (112404), we get a palindrome (40533504).

The spelling of 40421100 in words is "forty million, four hundred twenty-one thousand, one hundred".