2140143 has 4 divisors (see below), whose sum is σ = 2853528. Its totient is φ = 1426760.

The previous prime is 2140139. The next prime is 2140157. The reversal of 2140143 is 3410412.

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 2140143 - 2² = 2140139 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140163) 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 3 ways as a sum of consecutive naturals, for example, 356688 + ... + 356693.

It is an arithmetic number, because the mean of its divisors is an integer number (713382).

2^2140143 is an apocalyptic number.

2140143 is a deficient number, since it is larger than the sum of its proper divisors (713385).

2140143 is an equidigital number, since it uses as much as digits as its factorization.

2140143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713384.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2140143 is about 1462.9227594101. The cubic root of 2140143 is about 128.8687445672.

Adding to 2140143 its reverse (3410412), we get a palindrome (5550555).

The spelling of 2140143 in words is "two million, one hundred forty thousand, one hundred forty-three".