4043121 has 4 divisors (see below), whose sum is σ = 5390832. Its totient is φ = 2695412.

The previous prime is 4043119. The next prime is 4043129. The reversal of 4043121 is 1213404.

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 4043121 - 2¹ = 4043119 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 4043121.

It is not an unprimeable number, because it can be changed into a prime (4043129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673851 + ... + 673856.

It is an arithmetic number, because the mean of its divisors is an integer number (1347708).

Almost surely, 2^4043121 is an apocalyptic number.

It is an amenable number.

4043121 is a deficient number, since it is larger than the sum of its proper divisors (1347711).

4043121 is a wasteful number, since it uses less digits than its factorization.

4043121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347710.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 4043121 is about 2010.7513521070. The cubic root of 4043121 is about 159.3084869706.

Adding to 4043121 its reverse (1213404), we get a palindrome (5256525).

The spelling of 4043121 in words is "four million, forty-three thousand, one hundred twenty-one".