2134206521 has 8 divisors (see below), whose sum is σ = 2254533600. Its totient is φ = 2014679520.

The previous prime is 2134206511. The next prime is 2134206523. The reversal of 2134206521 is 1256024312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2134206521 - 2²² = 2130012217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2134206523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194531 + ... + 205208.

It is an arithmetic number, because the mean of its divisors is an integer number (281816700).

Almost surely, 2^2134206521 is an apocalyptic number.

It is an amenable number.

2134206521 is a deficient number, since it is larger than the sum of its proper divisors (120327079).

2134206521 is a wasteful number, since it uses less digits than its factorization.

2134206521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400039.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2134206521 is about 46197.4731018916. The cubic root of 2134206521 is about 1287.4947916464.

The spelling of 2134206521 in words is "two billion, one hundred thirty-four million, two hundred six thousand, five hundred twenty-one".