2129441 has 8 divisors (see below), whose sum is σ = 2228520. Its totient is φ = 2032128.

The previous prime is 2129431. The next prime is 2129443. The reversal of 2129441 is 1449212.

It can be written as a sum of positive squares in 4 ways, for example, as 384400 + 1745041 = 620^2 + 1321^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2129441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129443) 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, 2435 + ... + 3191.

It is an arithmetic number, because the mean of its divisors is an integer number (278565).

2^2129441 is an apocalyptic number.

It is an amenable number.

2129441 is a deficient number, since it is larger than the sum of its proper divisors (99079).

2129441 is an equidigital number, since it uses as much as digits as its factorization.

2129441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883.

The product of its digits is 576, while the sum is 23.

The square root of 2129441 is about 1459.2604291215. The cubic root of 2129441 is about 128.6535784814.

The spelling of 2129441 in words is "two million, one hundred twenty-nine thousand, four hundred forty-one".