2141881 has 16 divisors (see below), whose sum is σ = 2661120. Its totient is φ = 1681920.

The previous prime is 2141879. The next prime is 2141891. The reversal of 2141881 is 1881412.

2141881 = 205² + 206² + ... + 246².

2141881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2141881 - 2¹ = 2141879 is a prime.

It is a super-2 number, since 2×2141881² = 9175308436322, which contains 22 as substring.

2141881 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2141801) 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 15 ways as a sum of consecutive naturals, for example, 4660 + ... + 5098.

It is an arithmetic number, because the mean of its divisors is an integer number (166320).

2^2141881 is an apocalyptic number.

It is an amenable number.

2141881 is a deficient number, since it is larger than the sum of its proper divisors (519239).

2141881 is a wasteful number, since it uses less digits than its factorization.

2141881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504.

The product of its digits is 512, while the sum is 25.

The square root of 2141881 is about 1463.5166551837. The cubic root of 2141881 is about 128.9036196941.

The spelling of 2141881 in words is "two million, one hundred forty-one thousand, eight hundred eighty-one".