2141081 has 4 divisors (see below), whose sum is σ = 2163252. Its totient is φ = 2118912.

The previous prime is 2141071. The next prime is 2141123. The reversal of 2141081 is 1801412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1638400 + 502681 = 1280^2 + 709^2 .

It is a cyclic number.

It is not a de Polignac number, because 2141081 - 2¹⁰ = 2140057 is a prime.

It is a super-2 number, since 2×2141081² = 9168455697122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2141071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10940 + ... + 11133.

It is an arithmetic number, because the mean of its divisors is an integer number (540813).

2^2141081 is an apocalyptic number.

It is an amenable number.

2141081 is a deficient number, since it is larger than the sum of its proper divisors (22171).

2141081 is an equidigital number, since it uses as much as digits as its factorization.

2141081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22170.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 2141081 is about 1463.2433153785. The cubic root of 2141081 is about 128.8875690456.

Adding to 2141081 its reverse (1801412), we get a palindrome (3942493).

The spelling of 2141081 in words is "two million, one hundred forty-one thousand, eighty-one".