2126840 has 16 divisors (see below), whose sum is σ = 4785480. Its totient is φ = 850720.

The previous prime is 2126827. The next prime is 2126849. The reversal of 2126840 is 486212.

2126840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26546 + ... + 26625.

2^2126840 is an apocalyptic number.

2126840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2126840 is an abundant number, since it is smaller than the sum of its proper divisors (2658640).

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

2126840 is a wasteful number, since it uses less digits than its factorization.

2126840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53182 (or 53178 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 2126840 is about 1458.3689519460. The cubic root of 2126840 is about 128.6011759505.

The spelling of 2126840 in words is "two million, one hundred twenty-six thousand, eight hundred forty".