2143072 has 24 divisors (see below), whose sum is σ = 4253256. Its totient is φ = 1062912.

The previous prime is 2143069. The next prime is 2143073. The reversal of 2143072 is 2703412.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143073) 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, 6003 + ... + 6349.

It is an arithmetic number, because the mean of its divisors is an integer number (177219).

2^2143072 is an apocalyptic number.

2143072 is the 783-rd centered heptagonal number.

It is an amenable number.

2143072 is a deficient number, since it is larger than the sum of its proper divisors (2110184).

2143072 is a wasteful number, since it uses less digits than its factorization.

2143072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 2143072 is about 1463.9234952688. The cubic root of 2143072 is about 128.9275076947.

Adding to 2143072 its reverse (2703412), we get a palindrome (4846484).

The spelling of 2143072 in words is "two million, one hundred forty-three thousand, seventy-two".