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12155075842 = 2713173386047
BaseRepresentation
bin10110101000111111…
…11011110100000010
31011101002220211102011
423110133323310002
5144343144411332
65330045243134
7610133303620
oct132437736402
934332824364
1012155075842
115178250428
1224328634aa
1311b931cb90
14834468510
154b21a3e47
hex2d47fbd02

12155075842 has 32 divisors (see below), whose sum is σ = 22569910272. Its totient is φ = 4780793664.

The previous prime is 12155075833. The next prime is 12155075843. The reversal of 12155075842 is 24857055121.

It is a junction number, because it is equal to n+sod(n) for n = 12155075795 and 12155075804.

It is not an unprimeable number, because it can be changed into a prime (12155075843) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 161538 + ... + 224509.

It is an arithmetic number, because the mean of its divisors is an integer number (705309696).

Almost surely, 212155075842 is an apocalyptic number.

12155075842 is a deficient number, since it is larger than the sum of its proper divisors (10414834430).

12155075842 is a wasteful number, since it uses less digits than its factorization.

12155075842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386242.

The product of its (nonzero) digits is 112000, while the sum is 40.

The spelling of 12155075842 in words is "twelve billion, one hundred fifty-five million, seventy-five thousand, eight hundred forty-two".

Divisors: 1 2 7 13 14 26 91 173 182 346 1211 2249 2422 4498 15743 31486 386047 772094 2702329 5018611 5404658 10037222 35130277 66786131 70260554 133572262 467502917 868219703 935005834 1736439406 6077537921 12155075842