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13130429 = 131010033
BaseRepresentation
bin110010000101…
…101010111101
3220201002120012
4302011222331
511330133204
61145233005
7216415064
oct62055275
926632505
1013130429
1174590a4
124492765
1329496b0
141a5b1db
15124576e
hexc85abd

13130429 has 4 divisors (see below), whose sum is σ = 14140476. Its totient is φ = 12120384.

The previous prime is 13130419. The next prime is 13130441. The reversal of 13130429 is 92403131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92403131 = 233339607.

It can be written as a sum of positive squares in 2 ways, for example, as 3062500 + 10067929 = 1750^2 + 3173^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13130429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13130419) 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 3 ways as a sum of consecutive naturals, for example, 505004 + ... + 505029.

It is an arithmetic number, because the mean of its divisors is an integer number (3535119).

Almost surely, 213130429 is an apocalyptic number.

It is an amenable number.

13130429 is a deficient number, since it is larger than the sum of its proper divisors (1010047).

13130429 is a wasteful number, since it uses less digits than its factorization.

13130429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010046.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 13130429 is about 3623.5933822657. The cubic root of 13130429 is about 235.9172181651.

The spelling of 13130429 in words is "thirteen million, one hundred thirty thousand, four hundred twenty-nine".

Divisors: 1 13 1010033 13130429