421421410410 has 256 divisors, whose sum is σ = 1437861777408. Its totient is φ = 76077158400.

The previous prime is 421421410349. The next prime is 421421410447. The reversal of 421421410410 is 14014124124.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 97765 + ... + 923255.

It is an arithmetic number, because the mean of its divisors is an integer number (5616647568).

Almost surely, 2^421421410410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421421410410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (718930888704).

421421410410 is an abundant number, since it is smaller than the sum of its proper divisors (1016440366998).

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

421421410410 is a wasteful number, since it uses less digits than its factorization.

421421410410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825549.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 421421410410 its reverse (14014124124), we get a palindrome (435435534534).

The spelling of 421421410410 in words is "four hundred twenty-one billion, four hundred twenty-one million, four hundred ten thousand, four hundred ten".