421441424440 has 32 divisors (see below), whose sum is σ = 950174498160. Its totient is φ = 168233228800.

The previous prime is 421441424423. The next prime is 421441424447. The reversal of 421441424440 is 44424144124.

It is a super-2 number, since 2×421441424440² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421441424396 and 421441424405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421441424447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10709521 + ... + 10748800.

Almost surely, 2^421441424440 is an apocalyptic number.

421441424440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421441424440 is an abundant number, since it is smaller than the sum of its proper divisors (528733073720).

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

421441424440 is a wasteful number, since it uses less digits than its factorization.

421441424440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21458823 (or 21458819 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 34.

Adding to 421441424440 its reverse (44424144124), we get a palindrome (465865568564).

The spelling of 421441424440 in words is "four hundred twenty-one billion, four hundred forty-one million, four hundred twenty-four thousand, four hundred forty".