2605143 has 4 divisors (see below), whose sum is σ = 3473528. Its totient is φ = 1736760.

The previous prime is 2605139. The next prime is 2605159. The reversal of 2605143 is 3415062.

It is a happy number.

2605143 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 not a de Polignac number, because 2605143 - 2² = 2605139 is a prime.

It is a D-number.

It is a Duffinian number.

2605143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605103) 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, 434188 + ... + 434193.

It is an arithmetic number, because the mean of its divisors is an integer number (868382).

2^2605143 is an apocalyptic number.

2605143 is a deficient number, since it is larger than the sum of its proper divisors (868385).

2605143 is an equidigital number, since it uses as much as digits as its factorization.

2605143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868384.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2605143 is about 1614.0455383910. The cubic root of 2605143 is about 137.5974933911.

The spelling of 2605143 in words is "two million, six hundred five thousand, one hundred forty-three".