4918121 has 4 divisors (see below), whose sum is σ = 5296452. Its totient is φ = 4539792.

The previous prime is 4918097. The next prime is 4918129. The reversal of 4918121 is 1218194.

4918121 is digitally balanced in base 3, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 1638400 + 3279721 = 1280^2 + 1811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4918121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4918129) 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, 189146 + ... + 189171.

It is an arithmetic number, because the mean of its divisors is an integer number (1324113).

Almost surely, 2^4918121 is an apocalyptic number.

It is an amenable number.

4918121 is a deficient number, since it is larger than the sum of its proper divisors (378331).

4918121 is a wasteful number, since it uses less digits than its factorization.

4918121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378330.

The product of its digits is 576, while the sum is 26.

The square root of 4918121 is about 2217.6837015228. The cubic root of 4918121 is about 170.0590452337.

The spelling of 4918121 in words is "four million, nine hundred eighteen thousand, one hundred twenty-one".