2143045 has 8 divisors (see below), whose sum is σ = 2595096. Its totient is φ = 1698816.

The previous prime is 2143039. The next prime is 2143051. The reversal of 2143045 is 5403412.

It is an interprime number because it is at equal distance from previous prime (2143039) and next prime (2143051).

It can be written as a sum of positive squares in 4 ways, for example, as 66564 + 2076481 = 258^2 + 1441^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2143045 - 2⁹ = 2142533 is a prime.

It is a Duffinian number.

2143045 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1332 + ... + 2461.

It is an arithmetic number, because the mean of its divisors is an integer number (324387).

2^2143045 is an apocalyptic number.

It is an amenable number.

2143045 is a deficient number, since it is larger than the sum of its proper divisors (452051).

2143045 is a wasteful number, since it uses less digits than its factorization.

2143045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2143045 is about 1463.9142734464. The cubic root of 2143045 is about 128.9269662512.

Adding to 2143045 its reverse (5403412), we get a palindrome (7546457).

The spelling of 2143045 in words is "two million, one hundred forty-three thousand, forty-five".