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13180142 = 26590071
BaseRepresentation
bin110010010001…
…110011101110
3220210121202102
4302101303232
511333231032
61150255102
7220013033
oct62216356
926717672
1013180142
117492488
1244b7492
132966201
141a7138a
151255362
hexc91cee

13180142 has 4 divisors (see below), whose sum is σ = 19770216. Its totient is φ = 6590070.

The previous prime is 13180121. The next prime is 13180157. The reversal of 13180142 is 24108131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24108131 = 191268849.

It is a super-2 number, since 2×131801422 = 347432286280328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3295034 + ... + 3295037.

It is an arithmetic number, because the mean of its divisors is an integer number (4942554).

Almost surely, 213180142 is an apocalyptic number.

13180142 is a deficient number, since it is larger than the sum of its proper divisors (6590074).

13180142 is an equidigital number, since it uses as much as digits as its factorization.

13180142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6590073.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 13180142 is about 3630.4465290099. The cubic root of 13180142 is about 236.2145778943.

Adding to 13180142 its reverse (24108131), we get a palindrome (37288273).

The spelling of 13180142 in words is "thirteen million, one hundred eighty thousand, one hundred forty-two".

Divisors: 1 2 6590071 13180142