2421271 has 4 divisors (see below), whose sum is σ = 2452000. Its totient is φ = 2390544.

The previous prime is 2421253. The next prime is 2421277. The reversal of 2421271 is 1721242.

It is a happy number.

2421271 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.

It is a cyclic number.

It is not a de Polignac number, because 2421271 - 2²¹ = 324119 is a prime.

It is a Duffinian number.

2421271 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421277) 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, 15246 + ... + 15403.

It is an arithmetic number, because the mean of its divisors is an integer number (613000).

2^2421271 is an apocalyptic number.

2421271 is a deficient number, since it is larger than the sum of its proper divisors (30729).

2421271 is an equidigital number, since it uses as much as digits as its factorization.

2421271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30728.

The product of its digits is 224, while the sum is 19.

The square root of 2421271 is about 1556.0433798580. The cubic root of 2421271 is about 134.2809690815.

The spelling of 2421271 in words is "two million, four hundred twenty-one thousand, two hundred seventy-one".