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13042641 = 347233397
BaseRepresentation
bin110001110000…
…001111010001
3220112122010210
4301300033101
511314331031
61143314333
7215601123
oct61601721
926478123
1013042641
1173a9147
12444b9a9
132918751
141a37213
151229746
hexc703d1

13042641 has 16 divisors (see below), whose sum is σ = 17881344. Its totient is φ = 8452224.

The previous prime is 13042639. The next prime is 13042649. The reversal of 13042641 is 14624031.

It is not a de Polignac number, because 13042641 - 21 = 13042639 is a prime.

It is a super-2 number, since 2×130426412 = 340220968509762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13042649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32655 + ... + 33051.

It is an arithmetic number, because the mean of its divisors is an integer number (1117584).

Almost surely, 213042641 is an apocalyptic number.

It is an amenable number.

13042641 is a deficient number, since it is larger than the sum of its proper divisors (4838703).

13042641 is a wasteful number, since it uses less digits than its factorization.

13042641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 13042641 is about 3611.4596771943. The cubic root of 13042641 is about 235.3902734849.

Adding to 13042641 its reverse (14624031), we get a palindrome (27666672).

The spelling of 13042641 in words is "thirteen million, forty-two thousand, six hundred forty-one".

Divisors: 1 3 47 141 233 397 699 1191 10951 18659 32853 55977 92501 277503 4347547 13042641