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2124214405 = 5432229769
BaseRepresentation
bin111111010011100…
…1111000010000101
312111001002021100121
41332213033002011
513322244330110
6550441141541
7103432344625
oct17647170205
95431067317
102124214405
119a00777a5
124b348a8b1
1327b118601
14162190885
15c674bcda
hex7e9cf085

2124214405 has 12 divisors (see below), whose sum is σ = 2609727660. Its totient is φ = 1659844032.

The previous prime is 2124214399. The next prime is 2124214409. The reversal of 2124214405 is 5044124212.

It can be written as a sum of positive squares in 2 ways, for example, as 619860609 + 1504353796 = 24897^2 + 38786^2 .

It is not a de Polignac number, because 2124214405 - 25 = 2124214373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2124214405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2124214409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105640 + ... + 124129.

It is an arithmetic number, because the mean of its divisors is an integer number (217477305).

Almost surely, 22124214405 is an apocalyptic number.

It is an amenable number.

2124214405 is a deficient number, since it is larger than the sum of its proper divisors (485513255).

2124214405 is an equidigital number, since it uses as much as digits as its factorization.

2124214405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229860 (or 229817 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 2124214405 is about 46089.2005246348. The cubic root of 2124214405 is about 1285.4823455302.

Adding to 2124214405 its reverse (5044124212), we get a palindrome (7168338617).

The spelling of 2124214405 in words is "two billion, one hundred twenty-four million, two hundred fourteen thousand, four hundred five".

Divisors: 1 5 43 215 1849 9245 229769 1148845 9880067 49400335 424842881 2124214405