4161321 has 16 divisors (see below), whose sum is σ = 6433920. Its totient is φ = 2653200.

The previous prime is 4161307. The next prime is 4161331. The reversal of 4161321 is 1231614.

It is a happy number.

It is not a de Polignac number, because 4161321 - 2⁶ = 4161257 is a prime.

4161321 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4161294 and 4161303.

It is not an unprimeable number, because it can be changed into a prime (4161331) 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, 2730 + ... + 3971.

It is an arithmetic number, because the mean of its divisors is an integer number (402120).

Almost surely, 2^4161321 is an apocalyptic number.

It is an amenable number.

4161321 is a deficient number, since it is larger than the sum of its proper divisors (2272599).

4161321 is a wasteful number, since it uses less digits than its factorization.

4161321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6733 (or 6727 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 4161321 is about 2039.9316165009. The cubic root of 4161321 is about 160.8460521917.

Adding to 4161321 its reverse (1231614), we get a palindrome (5392935).

The spelling of 4161321 in words is "four million, one hundred sixty-one thousand, three hundred twenty-one".