2143340 has 24 divisors (see below), whose sum is σ = 4647552. Its totient is φ = 829440.

The previous prime is 2143331. The next prime is 2143369. The reversal of 2143340 is 433412.

2143340 = T₄₉ + T₅₀ + ... + T₂₃₄.

It is a zygodrome in base 3.

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, 1109 + ... + 2348.

It is an arithmetic number, because the mean of its divisors is an integer number (193648).

2^2143340 is an apocalyptic number.

2143340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143340 is an abundant number, since it is smaller than the sum of its proper divisors (2504212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2143340 is a wasteful number, since it uses less digits than its factorization.

2143340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3497 (or 3495 counting only the distinct ones).

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

The square root of 2143340 is about 1464.0150272453. The cubic root of 2143340 is about 128.9328817764.

Adding to 2143340 its reverse (433412), we get a palindrome (2576752).

The spelling of 2143340 in words is "two million, one hundred forty-three thousand, three hundred forty".