421016120 has 64 divisors (see below), whose sum is σ = 1084812480. Its totient is φ = 144055296.

The previous prime is 421016077. The next prime is 421016129. The reversal of 421016120 is 21610124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421016129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171542 + ... + 173978.

It is an arithmetic number, because the mean of its divisors is an integer number (16950195).

Almost surely, 2^421016120 is an apocalyptic number.

421016120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421016120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (542406240).

421016120 is an abundant number, since it is smaller than the sum of its proper divisors (663796360).

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

421016120 is a wasteful number, since it uses less digits than its factorization.

421016120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3072 (or 3068 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 421016120 is about 20518.6773452871. The cubic root of 421016120 is about 749.4906882878.

Adding to 421016120 its reverse (21610124), we get a palindrome (442626244).

The spelling of 421016120 in words is "four hundred twenty-one million, sixteen thousand, one hundred twenty".