2724121 has 2 divisors, whose sum is σ = 2724122. Its totient is φ = 2724120.

The previous prime is 2724119. The next prime is 2724151. The reversal of 2724121 is 1214272.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2433600 + 290521 = 1560^2 + 539^2 .

It is a cyclic number.

It is not a de Polignac number, because 2724121 - 2¹ = 2724119 is a prime.

Together with 2724119, it forms a pair of twin primes.

It is a Chen prime.

2724121 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2724151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1362060 + 1362061.

It is an arithmetic number, because the mean of its divisors is an integer number (1362061).

2^2724121 is an apocalyptic number.

It is an amenable number.

2724121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2724121 is an equidigital number, since it uses as much as digits as its factorization.

2724121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2724121 is about 1650.4911390250. The cubic root of 2724121 is about 139.6611020606.

Adding to 2724121 its reverse (1214272), we get a palindrome (3938393).

The spelling of 2724121 in words is "two million, seven hundred twenty-four thousand, one hundred twenty-one".