2124440 has 32 divisors (see below), whose sum is σ = 4823280. Its totient is φ = 842112.

The previous prime is 2124431. The next prime is 2124443. The reversal of 2124440 is 444212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2124443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6767 + ... + 7073.

2^2124440 is an apocalyptic number.

2124440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2124440 is an abundant number, since it is smaller than the sum of its proper divisors (2698840).

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

2124440 is a wasteful number, since it uses less digits than its factorization.

2124440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2124440 is about 1457.5458826397. The cubic root of 2124440 is about 128.5527850686.

Adding to 2124440 its reverse (444212), we get a palindrome (2568652).

The spelling of 2124440 in words is "two million, one hundred twenty-four thousand, four hundred forty".