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2129000521 = 19145976801
BaseRepresentation
bin111111011100101…
…1111100001001001
312111101002102200011
41332321133201021
513330011004041
6551131511521
7103521130414
oct17671374111
95441072604
102129000521
119a284666a
124b4bb85a1
1327c102c2b
14162a78b7b
15c6d94e81
hex7ee5f849

2129000521 has 8 divisors (see below), whose sum is σ = 2242618400. Its totient is φ = 2015539200.

The previous prime is 2129000479. The next prime is 2129000527. The reversal of 2129000521 is 1250009212.

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

It is a 9-Lehmer number, since φ(2129000521) divides (2129000521-1)9.

It is a cyclic number.

It is not a de Polignac number, because 2129000521 - 227 = 1994782793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2129000492 and 2129000501.

It is not an unprimeable number, because it can be changed into a prime (2129000527) 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 7 ways as a sum of consecutive naturals, for example, 10680 + ... + 66121.

It is an arithmetic number, because the mean of its divisors is an integer number (280327300).

Almost surely, 22129000521 is an apocalyptic number.

It is an amenable number.

2129000521 is a deficient number, since it is larger than the sum of its proper divisors (113617879).

2129000521 is a wasteful number, since it uses less digits than its factorization.

2129000521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78279.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 2129000521 is about 46141.0936259643. The cubic root of 2129000521 is about 1286.4470712232.

Adding to 2129000521 its reverse (1250009212), we get a palindrome (3379009733).

The spelling of 2129000521 in words is "two billion, one hundred twenty-nine million, five hundred twenty-one", and thus it is an aban number.

Divisors: 1 19 1459 27721 76801 1459219 112052659 2129000521