Search a number
-
+
127420872975 = 32521151483181
BaseRepresentation
bin111011010101011100…
…0000011100100001111
3110011220011212000110200
41312222320003210033
54041424220413400
6134311503304543
712130415356404
oct1665270034417
9404804760420
10127420872975
114a0478408a0
1220840bab153
13c02875c476
14624ab3c2ab
1534ab707b00
hex1daae0390f

127420872975 has 36 divisors (see below), whose sum is σ = 248972668152. Its totient is φ = 61779816000.

The previous prime is 127420872877. The next prime is 127420873001. The reversal of 127420872975 is 579278024721.

127420872975 is a `hidden beast` number, since 1 + 274 + 2 + 0 + 87 + 297 + 5 = 666.

It is not a de Polignac number, because 127420872975 - 216 = 127420807439 is a prime.

It is a super-2 number, since 2×1274208729752 (a number of 23 digits) 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 (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25739116 + ... + 25744065.

Almost surely, 2127420872975 is an apocalyptic number.

127420872975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

127420872975 is a deficient number, since it is larger than the sum of its proper divisors (121551795177).

127420872975 is a wasteful number, since it uses less digits than its factorization.

127420872975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51483208 (or 51483200 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 54.

The spelling of 127420872975 in words is "one hundred twenty-seven billion, four hundred twenty million, eight hundred seventy-two thousand, nine hundred seventy-five".

Divisors: 1 3 5 9 11 15 25 33 45 55 75 99 165 225 275 495 825 2475 51483181 154449543 257415905 463348629 566314991 772247715 1287079525 1698944973 2316743145 2831574955 3861238575 5096834919 8494724865 11583715725 14157874775 25484174595 42473624325 127420872975