Search a number
-
+
2120912471 = 5938239403
BaseRepresentation
bin111111001101010…
…1000111001010111
312110210212111221202
41332122220321113
513320423144341
6550242303115
7103362313166
oct17632507127
95423774852
102120912471
11999221a27
124b2357a9b
1327a5306c2
141619713dd
15c62e879b
hex7e6a8e57

2120912471 has 8 divisors (see below), whose sum is σ = 2157653760. Its totient is φ = 2084197752.

The previous prime is 2120912429. The next prime is 2120912473. The reversal of 2120912471 is 1742190212.

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 2120912471 - 26 = 2120912407 is a prime.

It is a super-3 number, since 3×21209124713 (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120912473) 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, 220856 + ... + 230258.

It is an arithmetic number, because the mean of its divisors is an integer number (269706720).

Almost surely, 22120912471 is an apocalyptic number.

2120912471 is a deficient number, since it is larger than the sum of its proper divisors (36741289).

2120912471 is an equidigital number, since it uses as much as digits as its factorization.

2120912471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13285.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2120912471 is about 46053.3654687689. The cubic root of 2120912471 is about 1284.8159377438.

The spelling of 2120912471 in words is "two billion, one hundred twenty million, nine hundred twelve thousand, four hundred seventy-one".

Divisors: 1 59 3823 9403 225557 554777 35947669 2120912471