2720143 has 4 divisors (see below), whose sum is σ = 2728080. Its totient is φ = 2712208.

The previous prime is 2720117. The next prime is 2720147. The reversal of 2720143 is 3410272.

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 2720143 - 2⁹ = 2719631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2720143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2720147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3430 + ... + 4147.

It is an arithmetic number, because the mean of its divisors is an integer number (682020).

2^2720143 is an apocalyptic number.

2720143 is a deficient number, since it is larger than the sum of its proper divisors (7937).

2720143 is an equidigital number, since it uses as much as digits as its factorization.

2720143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7936.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 2720143 is about 1649.2856029202. The cubic root of 2720143 is about 139.5930871529.

The spelling of 2720143 in words is "two million, seven hundred twenty thousand, one hundred forty-three".