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126868771 = 314219721
BaseRepresentation
bin1111000111111…
…01110100100011
322211201121020101
413203331310203
5224434300041
620331123231
73100236541
oct743756443
9284647211
10126868771
1165683427
12365a3517
13203904a3
1412bc6d91
15b210b31
hex78fdd23

126868771 has 8 divisors (see below), whose sum is σ = 131285888. Its totient is φ = 122472000.

The previous prime is 126868769. The next prime is 126868787. The reversal of 126868771 is 177868621.

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

It is a 6-Lehmer number, since φ(126868771) divides (126868771-1)6.

It is a cyclic number.

It is not a de Polignac number, because 126868771 - 21 = 126868769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126868751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8191 + ... + 17911.

It is an arithmetic number, because the mean of its divisors is an integer number (16410736).

Almost surely, 2126868771 is an apocalyptic number.

126868771 is a deficient number, since it is larger than the sum of its proper divisors (4417117).

126868771 is an equidigital number, since it uses as much as digits as its factorization.

126868771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10173.

The product of its digits is 225792, while the sum is 46.

The square root of 126868771 is about 11263.6038193821. The cubic root of 126868771 is about 502.4793796972.

The spelling of 126868771 in words is "one hundred twenty-six million, eight hundred sixty-eight thousand, seven hundred seventy-one".

Divisors: 1 31 421 9721 13051 301351 4092541 126868771