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12420320030 = 258314964241
BaseRepresentation
bin10111001000100111…
…10000101100011110
31012001121000122000222
423210103300230132
5200414100220110
65412242321342
7616533656366
oct134423605436
935047018028
1012420320030
1152a3a462a8
1224a7659252
13122c26c0c1
1485b7919a6
154ca5e9c55
hex2e44f0b1e

12420320030 has 16 divisors (see below), whose sum is σ = 22625933904. Its totient is φ = 4908270720.

The previous prime is 12420320027. The next prime is 12420320057. The reversal of 12420320030 is 3002302421.

12420320030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12420319990 and 12420320008.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7481291 + ... + 7482950.

It is an arithmetic number, because the mean of its divisors is an integer number (1414120869).

Almost surely, 212420320030 is an apocalyptic number.

12420320030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12420320030 is a deficient number, since it is larger than the sum of its proper divisors (10205613874).

12420320030 is a wasteful number, since it uses less digits than its factorization.

12420320030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14964331.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 12420320030 its reverse (3002302421), we get a palindrome (15422622451).

The spelling of 12420320030 in words is "twelve billion, four hundred twenty million, three hundred twenty thousand, thirty".

Divisors: 1 2 5 10 83 166 415 830 14964241 29928482 74821205 149642410 1242032003 2484064006 6210160015 12420320030