2102340 has 48 divisors (see below), whose sum is σ = 6052032. Its totient is φ = 544896.

The previous prime is 2102329. The next prime is 2102341. The reversal of 2102340 is 432012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1747 + ... + 2693.

It is an arithmetic number, because the mean of its divisors is an integer number (126084).

2^2102340 is an apocalyptic number.

2102340 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 2102340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3026016).

2102340 is an abundant number, since it is smaller than the sum of its proper divisors (3949692).

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

2102340 is a wasteful number, since it uses less digits than its factorization.

2102340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996 (or 994 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2102340 is about 1449.9448265365. The cubic root of 2102340 is about 128.1054632119.

Adding to 2102340 its reverse (432012), we get a palindrome (2534352).

It can be divided in two parts, 2102 and 340, that added together give a palindrome (2442).

The spelling of 2102340 in words is "two million, one hundred two thousand, three hundred forty".