2111240 has 32 divisors (see below), whose sum is σ = 4855680. Its totient is φ = 825792.

The previous prime is 2111231. The next prime is 2111251. The reversal of 2111240 is 421112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1319 + ... + 2441.

It is an arithmetic number, because the mean of its divisors is an integer number (151740).

2^2111240 is an apocalyptic number.

2111240 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 2111240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2427840).

2111240 is an abundant number, since it is smaller than the sum of its proper divisors (2744440).

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

2111240 is a wasteful number, since it uses less digits than its factorization.

2111240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181 (or 1177 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2111240 is about 1453.0106675451. The cubic root of 2111240 is about 128.2859816686.

Adding to 2111240 its reverse (421112), we get a palindrome (2532352).

The spelling of 2111240 in words is "two million, one hundred eleven thousand, two hundred forty".