2134521 has 9 divisors (see below), whose sum is σ = 3089541. Its totient is φ = 1420092.

The previous prime is 2134519. The next prime is 2134529. The reversal of 2134521 is 1254312.

The square root of 2134521 is 1461.

It is a perfect power (a square), and thus also a powerful number.

2134521 is a `hidden beast` number, since 213 + 452 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 2134521 - 2¹ = 2134519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2134494 and 2134503.

It is not an unprimeable number, because it can be changed into a prime (2134529) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4140 + ... + 4626.

2^2134521 is an apocalyptic number.

2134521 is the 1461-st square number.

2134521 is the 731-st centered octagonal number.

It is an amenable number.

2134521 is a deficient number, since it is larger than the sum of its proper divisors (955020).

2134521 is an frugal number, since it uses more digits than its factorization.

2134521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980 (or 490 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The cubic root of 2134521 is about 128.7558026731.

Adding to 2134521 its reverse (1254312), we get a palindrome (3388833).

The spelling of 2134521 in words is "two million, one hundred thirty-four thousand, five hundred twenty-one".