2126539 has 2 divisors, whose sum is σ = 2126540. Its totient is φ = 2126538.

The previous prime is 2126491. The next prime is 2126549. The reversal of 2126539 is 9356212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2126539 - 2⁹ = 2126027 is a prime.

2126539 is a lucky number.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (2126549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063269 + 1063270.

It is an arithmetic number, because the mean of its divisors is an integer number (1063270).

2^2126539 is an apocalyptic number.

2126539 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126539 is an equidigital number, since it uses as much as digits as its factorization.

2126539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 28.

The square root of 2126539 is about 1458.2657508150. The cubic root of 2126539 is about 128.5951089246.

The spelling of 2126539 in words is "two million, one hundred twenty-six thousand, five hundred thirty-nine".