2143587 has 4 divisors (see below), whose sum is σ = 2858120. Its totient is φ = 1429056.

The previous prime is 2143579. The next prime is 2143621. The reversal of 2143587 is 7853412.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2143587 - 2³ = 2143579 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2143517) 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, 357262 + ... + 357267.

It is an arithmetic number, because the mean of its divisors is an integer number (714530).

2^2143587 is an apocalyptic number.

2143587 is a deficient number, since it is larger than the sum of its proper divisors (714533).

2143587 is an equidigital number, since it uses as much as digits as its factorization.

2143587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714532.

The product of its digits is 6720, while the sum is 30.

The square root of 2143587 is about 1464.0993818727. The cubic root of 2143587 is about 128.9378343580.

Adding to 2143587 its reverse (7853412), we get a palindrome (9996999).

The spelling of 2143587 in words is "two million, one hundred forty-three thousand, five hundred eighty-seven".