2143472 has 10 divisors (see below), whose sum is σ = 4153008. Its totient is φ = 1071728.

The previous prime is 2143469. The next prime is 2143481. The reversal of 2143472 is 2743412.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66968 + ... + 66999.

2^2143472 is an apocalyptic number.

It is an amenable number.

2143472 is a deficient number, since it is larger than the sum of its proper divisors (2009536).

2143472 is a wasteful number, since it uses less digits than its factorization.

2143472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133975 (or 133969 counting only the distinct ones).

The product of its digits is 1344, while the sum is 23.

The square root of 2143472 is about 1464.0601080557. The cubic root of 2143472 is about 128.9355285475.

Adding to 2143472 its reverse (2743412), we get a palindrome (4886884).

The spelling of 2143472 in words is "two million, one hundred forty-three thousand, four hundred seventy-two".