4131121 has 4 divisors (see below), whose sum is σ = 4201200. Its totient is φ = 4061044.

The previous prime is 4131109. The next prime is 4131223. The reversal of 4131121 is 1211314.

4131121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4131121 - 2⁵ = 4131089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4137121) 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 3 ways as a sum of consecutive naturals, for example, 34951 + ... + 35068.

It is an arithmetic number, because the mean of its divisors is an integer number (1050300).

Almost surely, 2^4131121 is an apocalyptic number.

It is an amenable number.

4131121 is a deficient number, since it is larger than the sum of its proper divisors (70079).

4131121 is an equidigital number, since it uses as much as digits as its factorization.

4131121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70078.

The product of its digits is 24, while the sum is 13.

The square root of 4131121 is about 2032.5159285969. The cubic root of 4131121 is about 160.4560038310.

Adding to 4131121 its reverse (1211314), we get a palindrome (5342435).

The spelling of 4131121 in words is "four million, one hundred thirty-one thousand, one hundred twenty-one".