2721143 has 2 divisors, whose sum is σ = 2721144. Its totient is φ = 2721142.

The previous prime is 2721137. The next prime is 2721163. The reversal of 2721143 is 3411272.

It is an a-pointer prime, because the next prime (2721163) can be obtained adding 2721143 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2721143 - 2⁴ = 2721127 is a prime.

It is a super-3 number, since 3×2721143³ = 60447083327151333621, which contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2721113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1360571 + 1360572.

It is an arithmetic number, because the mean of its divisors is an integer number (1360572).

2^2721143 is an apocalyptic number.

2721143 is a deficient number, since it is larger than the sum of its proper divisors (1).

2721143 is an equidigital number, since it uses as much as digits as its factorization.

2721143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 20.

The square root of 2721143 is about 1649.5887366250. The cubic root of 2721143 is about 139.6101911537.

The spelling of 2721143 in words is "two million, seven hundred twenty-one thousand, one hundred forty-three".