4161220 has 24 divisors (see below), whose sum is σ = 9987264. Its totient is φ = 1426656.

The previous prime is 4161197. The next prime is 4161221. The reversal of 4161220 is 221614.

4161220 = T₆₁₉ + T₆₂₀ + ... + T₆₃₉.

4161220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 4161194 and 4161203.

It is not an unprimeable number, because it can be changed into a prime (4161221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14722 + ... + 15001.

It is an arithmetic number, because the mean of its divisors is an integer number (416136).

Almost surely, 2^4161220 is an apocalyptic number.

It is an amenable number.

4161220 is an abundant number, since it is smaller than the sum of its proper divisors (5826044).

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

4161220 is a wasteful number, since it uses less digits than its factorization.

4161220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29739 (or 29737 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 4161220 is about 2039.9068606189. The cubic root of 4161220 is about 160.8447508756.

Adding to 4161220 its reverse (221614), we get a palindrome (4382834).

The spelling of 4161220 in words is "four million, one hundred sixty-one thousand, two hundred twenty".