2126437 has 4 divisors (see below), whose sum is σ = 2130316. Its totient is φ = 2122560.

The previous prime is 2126431. The next prime is 2126441. The reversal of 2126437 is 7346212.

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 1811716 + 314721 = 1346^2 + 561^2 .

It is a cyclic number.

It is not a de Polignac number, because 2126437 - 2³ = 2126429 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 1 + 2²¹ + 6⁴ + 4³ + 3⁹ + 7² .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126431) 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, 948 + ... + 2269.

It is an arithmetic number, because the mean of its divisors is an integer number (532579).

2^2126437 is an apocalyptic number.

It is an amenable number.

2126437 is a deficient number, since it is larger than the sum of its proper divisors (3879).

2126437 is an equidigital number, since it uses as much as digits as its factorization.

2126437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878.

The product of its digits is 2016, while the sum is 25.

The square root of 2126437 is about 1458.2307773463. The cubic root of 2126437 is about 128.5930528590.

The spelling of 2126437 in words is "two million, one hundred twenty-six thousand, four hundred thirty-seven".