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127775041 = 401318641
BaseRepresentation
bin1111001110110…
…11000101000001
322220102122101221
413213123011001
5230202300131
620402355041
73111032662
oct747330501
9286378357
10127775041
1166142309
123695ba81
1320619b44
1412d81369
15b33e411
hex79db141

127775041 has 4 divisors (see below), whose sum is σ = 128094084. Its totient is φ = 127456000.

The previous prime is 127775029. The next prime is 127775083. The reversal of 127775041 is 140577721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 140577721 = 1009113931.

It can be written as a sum of positive squares in 2 ways, for example, as 123854641 + 3920400 = 11129^2 + 1980^2 .

It is a cyclic number.

It is not a de Polignac number, because 127775041 - 211 = 127772993 is a prime.

It is a super-2 number, since 2×1277750412 = 32652922205103362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 127774988 and 127775006.

It is not an unprimeable number, because it can be changed into a prime (127775341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158920 + ... + 159721.

It is an arithmetic number, because the mean of its divisors is an integer number (32023521).

Almost surely, 2127775041 is an apocalyptic number.

It is an amenable number.

127775041 is a deficient number, since it is larger than the sum of its proper divisors (319043).

127775041 is an equidigital number, since it uses as much as digits as its factorization.

127775041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319042.

The product of its (nonzero) digits is 13720, while the sum is 34.

The square root of 127775041 is about 11303.7622497998. The cubic root of 127775041 is about 503.6730066412.

The spelling of 127775041 in words is "one hundred twenty-seven million, seven hundred seventy-five thousand, forty-one".

Divisors: 1 401 318641 127775041