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13142823 = 39534597
BaseRepresentation
bin110010001000…
…101100100111
3220201201120020
4302020230213
511331032243
61145410223
7216466161
oct62105447
926651506
1013142823
117467441
124499973
132952225
141a61931
151249283
hexc88b27

13142823 has 8 divisors (see below), whose sum is σ = 17545968. Its totient is φ = 8750784.

The previous prime is 13142797. The next prime is 13142839. The reversal of 13142823 is 32824131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13142823 - 28 = 13142567 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13142793 and 13142802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13142873) 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 7 ways as a sum of consecutive naturals, for example, 561 + ... + 5157.

It is an arithmetic number, because the mean of its divisors is an integer number (2193246).

Almost surely, 213142823 is an apocalyptic number.

13142823 is a deficient number, since it is larger than the sum of its proper divisors (4403145).

13142823 is an equidigital number, since it uses as much as digits as its factorization.

13142823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553.

The product of its digits is 1152, while the sum is 24.

The square root of 13142823 is about 3625.3031597371. The cubic root of 13142823 is about 235.9914233692.

Adding to 13142823 its reverse (32824131), we get a palindrome (45966954).

The spelling of 13142823 in words is "thirteen million, one hundred forty-two thousand, eight hundred twenty-three".

Divisors: 1 3 953 2859 4597 13791 4380941 13142823