421172076 has 192 divisors, whose sum is σ = 1192181760. Its totient is φ = 114462720.

The previous prime is 421172041. The next prime is 421172099. The reversal of 421172076 is 670271124.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3863910 + ... + 3864018.

It is an arithmetic number, because the mean of its divisors is an integer number (6209280).

Almost surely, 2^421172076 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 421172076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (596090880).

421172076 is an abundant number, since it is smaller than the sum of its proper divisors (771009684).

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

421172076 is a wasteful number, since it uses less digits than its factorization.

421172076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 421172076 is about 20522.4773358384. The cubic root of 421172076 is about 749.5832208809.

The spelling of 421172076 in words is "four hundred twenty-one million, one hundred seventy-two thousand, seventy-six".