2143140 has 48 divisors (see below), whose sum is σ = 6265728. Its totient is φ = 546304.

The previous prime is 2143109. The next prime is 2143147. The reversal of 2143140 is 413412.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 604 + ... + 2156.

It is an arithmetic number, because the mean of its divisors is an integer number (130536).

2^2143140 is an apocalyptic number.

2143140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2143140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3132864).

2143140 is an abundant number, since it is smaller than the sum of its proper divisors (4122588).

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

2143140 is a wasteful number, since it uses less digits than its factorization.

2143140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588 (or 1586 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2143140 is about 1463.9467203420. The cubic root of 2143140 is about 128.9288713101.

Adding to 2143140 its reverse (413412), we get a palindrome (2556552).

The spelling of 2143140 in words is "two million, one hundred forty-three thousand, one hundred forty".