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127485013 = 1271003819
BaseRepresentation
bin1111001100101…
…00010001010101
322212212220120011
413212110101111
5230114010023
620352240221
73105414265
oct746242125
9285786504
10127485013
1165a64417
1236840071
1320547b26
1412d077a5
15b2d350d
hex7994455

127485013 has 4 divisors (see below), whose sum is σ = 128488960. Its totient is φ = 126481068.

The previous prime is 127485011. The next prime is 127485077. The reversal of 127485013 is 310584721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310584721 = 327194951.

It is a cyclic number.

It is not a de Polignac number, because 127485013 - 21 = 127485011 is a prime.

It is a super-2 number, since 2×1274850132 = 32504857079220338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127485011) 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, 501783 + ... + 502036.

It is an arithmetic number, because the mean of its divisors is an integer number (32122240).

Almost surely, 2127485013 is an apocalyptic number.

It is an amenable number.

127485013 is a deficient number, since it is larger than the sum of its proper divisors (1003947).

127485013 is a wasteful number, since it uses less digits than its factorization.

127485013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003946.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 127485013 is about 11290.9261356188. The cubic root of 127485013 is about 503.2916334131.

The spelling of 127485013 in words is "one hundred twenty-seven million, four hundred eighty-five thousand, thirteen".

Divisors: 1 127 1003819 127485013