2126289 has 8 divisors (see below), whose sum is σ = 3092832. Its totient is φ = 1288640.

The previous prime is 2126273. The next prime is 2126297. The reversal of 2126289 is 9826212.

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

It is a cyclic number.

It is not a de Polignac number, because 2126289 - 2⁴ = 2126273 is a prime.

It is a super-2 number, since 2×2126289² = 9042209823042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126249) 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, 32184 + ... + 32249.

It is an arithmetic number, because the mean of its divisors is an integer number (386604).

2^2126289 is an apocalyptic number.

It is an amenable number.

2126289 is a deficient number, since it is larger than the sum of its proper divisors (966543).

2126289 is a wasteful number, since it uses less digits than its factorization.

2126289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64447.

The product of its digits is 3456, while the sum is 30.

The square root of 2126289 is about 1458.1800300374. The cubic root of 2126289 is about 128.5900694313.

It can be divided in two parts, 2126 and 289, that added together give a triangular number (2415 = T₆₉).

The spelling of 2126289 in words is "two million, one hundred twenty-six thousand, two hundred eighty-nine".