2145143 has 16 divisors (see below), whose sum is σ = 2881536. Its totient is φ = 1542240.

The previous prime is 2145137. The next prime is 2145151. The reversal of 2145143 is 3415412.

It is a de Polignac number, because none of the positive numbers 2^k-2145143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71 + ... + 2072.

It is an arithmetic number, because the mean of its divisors is an integer number (180096).

2^2145143 is an apocalyptic number.

2145143 is a deficient number, since it is larger than the sum of its proper divisors (736393).

2145143 is a wasteful number, since it uses less digits than its factorization.

2145143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174.

The product of its digits is 480, while the sum is 20.

The square root of 2145143 is about 1464.6306701691. The cubic root of 2145143 is about 128.9690248727.

The spelling of 2145143 in words is "two million, one hundred forty-five thousand, one hundred forty-three".