2112140 has 12 divisors (see below), whose sum is σ = 4435536. Its totient is φ = 844848.

The previous prime is 2112139. The next prime is 2112151. The reversal of 2112140 is 412112.

2112140 = 210² + 211² + ... + 249².

It is a super-2 number, since 2×2112140² = 8922270759200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52784 + ... + 52823.

It is an arithmetic number, because the mean of its divisors is an integer number (369628).

2^2112140 is an apocalyptic number.

2112140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112140 is an abundant number, since it is smaller than the sum of its proper divisors (2323396).

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

2112140 is a wasteful number, since it uses less digits than its factorization.

2112140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105616 (or 105614 counting only the distinct ones).

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

The square root of 2112140 is about 1453.3203363333. The cubic root of 2112140 is about 128.3042080792.

Adding to 2112140 its reverse (412112), we get a palindrome (2524252).

The spelling of 2112140 in words is "two million, one hundred twelve thousand, one hundred forty".