2126365 has 4 divisors (see below), whose sum is σ = 2551644. Its totient is φ = 1701088.

The previous prime is 2126363. The next prime is 2126381. The reversal of 2126365 is 5636212.

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 1666681 + 459684 = 1291^2 + 678^2 .

It is a cyclic number.

It is not a de Polignac number, because 2126365 - 2¹ = 2126363 is a prime.

It is a super-2 number, since 2×2126365² = 9042856226450, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹³ + 1 + 2²¹ + 6² + 3⁹ + 6⁴ + 5 .

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126363) 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, 212632 + ... + 212641.

It is an arithmetic number, because the mean of its divisors is an integer number (637911).

2^2126365 is an apocalyptic number.

It is an amenable number.

2126365 is a deficient number, since it is larger than the sum of its proper divisors (425279).

2126365 is an equidigital number, since it uses as much as digits as its factorization.

2126365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425278.

The product of its digits is 2160, while the sum is 25.

The square root of 2126365 is about 1458.2060896869. The cubic root of 2126365 is about 128.5916014790.

The spelling of 2126365 in words is "two million, one hundred twenty-six thousand, three hundred sixty-five".