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12420883073 = 25343490111
BaseRepresentation
bin10111001000101011…
…11010001010000001
31012001122002020101102
423210111322022001
5200414221224243
65412302344145
7616541523044
oct134425721201
935048066342
1012420883073
1152a42a0325
1224a788b055
13122c408471
1485b89ac5b
154ca6ab9b8
hex2e457a281

12420883073 has 4 divisors (see below), whose sum is σ = 12421398528. Its totient is φ = 12420367620.

The previous prime is 12420883067. The next prime is 12420883081. The reversal of 12420883073 is 37038802421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12420883073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12420885073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219713 + ... + 270398.

It is an arithmetic number, because the mean of its divisors is an integer number (3105349632).

Almost surely, 212420883073 is an apocalyptic number.

It is an amenable number.

12420883073 is a deficient number, since it is larger than the sum of its proper divisors (515455).

12420883073 is an equidigital number, since it uses as much as digits as its factorization.

12420883073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515454.

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 12420883073 in words is "twelve billion, four hundred twenty million, eight hundred eighty-three thousand, seventy-three".

Divisors: 1 25343 490111 12420883073