2126369 has 4 divisors (see below), whose sum is σ = 2430144. Its totient is φ = 1822596.

The previous prime is 2126363. The next prime is 2126381. The reversal of 2126369 is 9636212.

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 2126369 - 2²⁰ = 1077793 is a prime.

It is a super-2 number, since 2×2126369² = 9042890248322, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹³ + 1 + 2²¹ + 6² + 3⁹ + 6⁴ + 9 .

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2126363) 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, 151877 + ... + 151890.

It is an arithmetic number, because the mean of its divisors is an integer number (607536).

2^2126369 is an apocalyptic number.

It is an amenable number.

2126369 is a deficient number, since it is larger than the sum of its proper divisors (303775).

2126369 is an equidigital number, since it uses as much as digits as its factorization.

2126369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303774.

The product of its digits is 3888, while the sum is 29.

The square root of 2126369 is about 1458.2074612345. The cubic root of 2126369 is about 128.5916821121.

The spelling of 2126369 in words is "two million, one hundred twenty-six thousand, three hundred sixty-nine".