421723876 has 48 divisors (see below), whose sum is σ = 890982400. Its totient is φ = 170825760.

The previous prime is 421723859. The next prime is 421723877. The reversal of 421723876 is 678327124.

It is not an unprimeable number, because it can be changed into a prime (421723877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31675 + ... + 42973.

Almost surely, 2^421723876 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 421723876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (445491200).

421723876 is an abundant number, since it is smaller than the sum of its proper divisors (469258524).

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

421723876 is a wasteful number, since it uses less digits than its factorization.

421723876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11384 (or 11382 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 421723876 is about 20535.9167314245. The cubic root of 421723876 is about 749.9104343415.

The spelling of 421723876 in words is "four hundred twenty-one million, seven hundred twenty-three thousand, eight hundred seventy-six".