421444104 has 32 divisors (see below), whose sum is σ = 1054864320. Its totient is φ = 140314176.

The previous prime is 421444099. The next prime is 421444117. The reversal of 421444104 is 401444124.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 7 ways as a sum of consecutive naturals, for example, 11037 + ... + 31059.

It is an arithmetic number, because the mean of its divisors is an integer number (32964510).

Almost surely, 2^421444104 is an apocalyptic number.

It is an amenable number.

421444104 is an abundant number, since it is smaller than the sum of its proper divisors (633420216).

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

421444104 is a wasteful number, since it uses less digits than its factorization.

421444104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20909 (or 20905 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 421444104 is about 20529.1038284675. The cubic root of 421444104 is about 749.7445672376.

Adding to 421444104 its reverse (401444124), we get a palindrome (822888228).

The spelling of 421444104 in words is "four hundred twenty-one million, four hundred forty-four thousand, one hundred four".