4120491 has 4 divisors (see below), whose sum is σ = 5493992. Its totient is φ = 2746992.

The previous prime is 4120483. The next prime is 4120517. The reversal of 4120491 is 1940214.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4120491 - 2³ = 4120483 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4120411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686746 + ... + 686751.

It is an arithmetic number, because the mean of its divisors is an integer number (1373498).

Almost surely, 2^4120491 is an apocalyptic number.

4120491 is a deficient number, since it is larger than the sum of its proper divisors (1373501).

4120491 is a wasteful number, since it uses less digits than its factorization.

4120491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373500.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 4120491 is about 2029.8992585840. The cubic root of 4120491 is about 160.3182597515.

The spelling of 4120491 in words is "four million, one hundred twenty thousand, four hundred ninety-one".