4120404121 has 16 divisors (see below), whose sum is σ = 4413676176. Its totient is φ = 3832897536.

The previous prime is 4120404103. The next prime is 4120404133. The reversal of 4120404121 is 1214040214.

It can be written as a sum of positive squares in 8 ways, for example, as 176400 + 4120227721 = 420^2 + 64189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4120404121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4120404151) 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, 1840815 + ... + 1843051.

It is an arithmetic number, because the mean of its divisors is an integer number (275854761).

Almost surely, 2^4120404121 is an apocalyptic number.

It is an amenable number.

4120404121 is a deficient number, since it is larger than the sum of its proper divisors (293272055).

4120404121 is a wasteful number, since it uses less digits than its factorization.

4120404121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3468.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 4120404121 is about 64190.3740525010. The cubic root of 4120404121 is about 1603.1713299354.

Adding to 4120404121 its reverse (1214040214), we get a palindrome (5334444335).

The spelling of 4120404121 in words is "four billion, one hundred twenty million, four hundred four thousand, one hundred twenty-one".