2111142 has 32 divisors (see below), whose sum is σ = 4769280. Its totient is φ = 617120.

The previous prime is 2111129. The next prime is 2111159. The reversal of 2111142 is 2411112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1363 + ... + 2465.

It is an arithmetic number, because the mean of its divisors is an integer number (149040).

2^2111142 is an apocalyptic number.

2111142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2384640).

2111142 is an abundant number, since it is smaller than the sum of its proper divisors (2658138).

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

2111142 is a wasteful number, since it uses less digits than its factorization.

2111142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148.

The product of its digits is 16, while the sum is 12.

The square root of 2111142 is about 1452.9769440703. The cubic root of 2111142 is about 128.2839967023.

Adding to 2111142 its reverse (2411112), we get a palindrome (4522254).

The spelling of 2111142 in words is "two million, one hundred eleven thousand, one hundred forty-two".