2126881 has 4 divisors (see below), whose sum is σ = 2135232. Its totient is φ = 2118532.

The previous prime is 2126867. The next prime is 2126893. The reversal of 2126881 is 1886212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2126881 - 2⁵ = 2126849 is a prime.

It is a super-2 number, since 2×2126881² = 9047245576322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2126801) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3781 + ... + 4306.

It is an arithmetic number, because the mean of its divisors is an integer number (533808).

2^2126881 is an apocalyptic number.

It is an amenable number.

2126881 is a deficient number, since it is larger than the sum of its proper divisors (8351).

2126881 is an equidigital number, since it uses as much as digits as its factorization.

2126881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8350.

The product of its digits is 1536, while the sum is 28.

The square root of 2126881 is about 1458.3830086778. The cubic root of 2126881 is about 128.6020023117.

The spelling of 2126881 in words is "two million, one hundred twenty-six thousand, eight hundred eighty-one".