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2120241187 = 31101677177
BaseRepresentation
bin111111001100000…
…0101000000100011
312110202121102010101
41332120011000203
513320240204222
6550220043231
7103353516121
oct17630050043
95422542111
102120241187
11998903649
124b2093517
1327a356cac
14161838911
15c6214927
hex7e605023

2120241187 has 8 divisors (see below), whose sum is σ = 2210308992. Its totient is φ = 2031528000.

The previous prime is 2120241133. The next prime is 2120241209. The reversal of 2120241187 is 7811420212.

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 2120241187 - 211 = 2120239139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120341187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335458 + ... + 341719.

It is an arithmetic number, because the mean of its divisors is an integer number (276288624).

Almost surely, 22120241187 is an apocalyptic number.

2120241187 is a deficient number, since it is larger than the sum of its proper divisors (90067805).

2120241187 is a wasteful number, since it uses less digits than its factorization.

2120241187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677309.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 2120241187 is about 46046.0767818497. The cubic root of 2120241187 is about 1284.6803722890.

Adding to 2120241187 its reverse (7811420212), we get a palindrome (9931661399).

The spelling of 2120241187 in words is "two billion, one hundred twenty million, two hundred forty-one thousand, one hundred eighty-seven".

Divisors: 1 31 101 3131 677177 20992487 68394877 2120241187