421773046420 has 96 divisors (see below), whose sum is σ = 1012475842560. Its totient is φ = 146089426560.

The previous prime is 421773046403. The next prime is 421773046421. The reversal of 421773046420 is 24640377124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421773046421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1034959 + ... + 1383721.

It is an arithmetic number, because the mean of its divisors is an integer number (10546623360).

Almost surely, 2^421773046420 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 421773046420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506237921280).

421773046420 is an abundant number, since it is smaller than the sum of its proper divisors (590702796140).

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

421773046420 is a wasteful number, since it uses less digits than its factorization.

421773046420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349045 (or 349043 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 40.

The spelling of 421773046420 in words is "four hundred twenty-one billion, seven hundred seventy-three million, forty-six thousand, four hundred twenty".