2134340521 has 4 divisors (see below), whose sum is σ = 2207938500. Its totient is φ = 2060742544.

The previous prime is 2134340513. The next prime is 2134340573. The reversal of 2134340521 is 1250434312.

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 378730521 + 1755610000 = 19461^2 + 41900^2 .

It is a cyclic number.

It is not a de Polignac number, because 2134340521 - 2³ = 2134340513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2134344521) 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, 36798946 + ... + 36799003.

It is an arithmetic number, because the mean of its divisors is an integer number (551984625).

Almost surely, 2^2134340521 is an apocalyptic number.

It is an amenable number.

2134340521 is a deficient number, since it is larger than the sum of its proper divisors (73597979).

2134340521 is an equidigital number, since it uses as much as digits as its factorization.

2134340521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73597978.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2134340521 is about 46198.9233749013. The cubic root of 2134340521 is about 1287.5217369755.

Adding to 2134340521 its reverse (1250434312), we get a palindrome (3384774833).

The spelling of 2134340521 in words is "two billion, one hundred thirty-four million, three hundred forty thousand, five hundred twenty-one".