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13420030043 = 71917147149
BaseRepresentation
bin11000111111110010…
…10110100001011011
31021122021011011100202
430133321112201123
5204441011430133
610055353452415
7653363242010
oct143771264133
937567134322
1013420030043
115767291222
12272641110b
13135b4072a4
14914465707
155382702e8
hex31fe5685b

13420030043 has 4 divisors (see below), whose sum is σ = 15337177200. Its totient is φ = 11502882888.

The previous prime is 13420029947. The next prime is 13420030093. The reversal of 13420030043 is 34003002431.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13420030043 - 216 = 13419964507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13420029997 and 13420030024.

It is not an unprimeable number, because it can be changed into a prime (13420030093) 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, 958573568 + ... + 958573581.

It is an arithmetic number, because the mean of its divisors is an integer number (3834294300).

Almost surely, 213420030043 is an apocalyptic number.

13420030043 is a deficient number, since it is larger than the sum of its proper divisors (1917147157).

13420030043 is an equidigital number, since it uses as much as digits as its factorization.

13420030043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917147156.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 13420030043 its reverse (34003002431), we get a palindrome (47423032474).

The spelling of 13420030043 in words is "thirteen billion, four hundred twenty million, thirty thousand, forty-three".

Divisors: 1 7 1917147149 13420030043