2143430 has 16 divisors (see below), whose sum is σ = 3897504. Its totient is φ = 848640.

The previous prime is 2143417. The next prime is 2143441. The reversal of 2143430 is 343412.

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

It is a junction number, because it is equal to n+sod(n) for n = 2143399 and 2143408.

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, 11 + ... + 2070.

It is an arithmetic number, because the mean of its divisors is an integer number (243594).

2^2143430 is an apocalyptic number.

2143430 is a deficient number, since it is larger than the sum of its proper divisors (1754074).

2143430 is a wasteful number, since it uses less digits than its factorization.

2143430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2143430 is about 1464.0457643120. The cubic root of 2143430 is about 128.9346864048.

Adding to 2143430 its reverse (343412), we get a palindrome (2486842).

The spelling of 2143430 in words is "two million, one hundred forty-three thousand, four hundred thirty".