421441104 has 80 divisors (see below), whose sum is σ = 1270775808. Its totient is φ = 117845376.

The previous prime is 421441103. The next prime is 421441117. The reversal of 421441104 is 401144124.

It is a super-2 number, since 2×421441104² = 355225208281477632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421441103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2449 + ... + 29135.

Almost surely, 2^421441104 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 421441104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (635387904).

421441104 is an abundant number, since it is smaller than the sum of its proper divisors (849334704).

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

421441104 is a wasteful number, since it uses less digits than its factorization.

421441104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26752 (or 26746 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 421441104 is about 20529.0307613389. The cubic root of 421441104 is about 749.7427882440.

Adding to 421441104 its reverse (401144124), we get a palindrome (822585228).

The spelling of 421441104 in words is "four hundred twenty-one million, four hundred forty-one thousand, one hundred four".