2134129521 has 4 divisors (see below), whose sum is σ = 2845506032. Its totient is φ = 1422753012.

The previous prime is 2134129489. The next prime is 2134129597. The reversal of 2134129521 is 1259214312.

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 not a de Polignac number, because 2134129521 - 2⁵ = 2134129489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2134129321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355688251 + ... + 355688256.

It is an arithmetic number, because the mean of its divisors is an integer number (711376508).

Almost surely, 2^2134129521 is an apocalyptic number.

It is an amenable number.

2134129521 is a deficient number, since it is larger than the sum of its proper divisors (711376511).

2134129521 is an equidigital number, since it uses as much as digits as its factorization.

2134129521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711376510.

The product of its digits is 4320, while the sum is 30.

The square root of 2134129521 is about 46196.6397154598. The cubic root of 2134129521 is about 1287.4793076261.

The spelling of 2134129521 in words is "two billion, one hundred thirty-four million, one hundred twenty-nine thousand, five hundred twenty-one".