421039344726 has 1152 divisors, whose sum is σ = 1405419724800. Its totient is φ = 88136294400.

The previous prime is 421039344647. The next prime is 421039344809. The reversal of 421039344726 is 627443930124.

421039344726 is a `hidden beast` number, since 4 + 210 + 393 + 4 + 47 + 2 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 3029059965 + ... + 3029060103.

It is an arithmetic number, because the mean of its divisors is an integer number (1219982400).

Almost surely, 2^421039344726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421039344726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (702709862400).

421039344726 is an abundant number, since it is smaller than the sum of its proper divisors (984380380074).

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

421039344726 is a wasteful number, since it uses less digits than its factorization.

421039344726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 421039344726 in words is "four hundred twenty-one billion, thirty-nine million, three hundred forty-four thousand, seven hundred twenty-six".