2143144 has 8 divisors (see below), whose sum is σ = 4018410. Its totient is φ = 1071568.

The previous prime is 2143109. The next prime is 2143147. The reversal of 2143144 is 4413412.

It can be written as a sum of positive squares in only one way, i.e., 1562500 + 580644 = 1250^2 + 762^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2143147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133939 + ... + 133954.

2^2143144 is an apocalyptic number.

It is an amenable number.

2143144 is a deficient number, since it is larger than the sum of its proper divisors (1875266).

2143144 is a wasteful number, since it uses less digits than its factorization.

2143144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267899 (or 267895 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 2143144 is about 1463.9480865113. The cubic root of 2143144 is about 128.9289515219.

Adding to 2143144 its reverse (4413412), we get a palindrome (6556556).

The spelling of 2143144 in words is "two million, one hundred forty-three thousand, one hundred forty-four".