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868389000042 = 2353139181108541
BaseRepresentation
bin11001010001100000000…
…01001001001101101010
310002000110112002220101010
430220300001021031222
5103211430041000132
61502533222004350
7116511326465544
oct14506001111552
93060415086333
10868389000042
11305310a51743
121203718766b6
1363b727094c5
143005d022694
15178c727e6cc
hexca3004936a

868389000042 has 64 divisors (see below), whose sum is σ = 1792141303680. Its totient is φ = 280397894400.

The previous prime is 868388999999. The next prime is 868389000043. The reversal of 868389000042 is 240000983868.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 868388999955 and 868389000000.

It is not an unprimeable number, because it can be changed into a prime (868389000043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7946292 + ... + 8054832.

It is an arithmetic number, because the mean of its divisors is an integer number (28002207870).

Almost surely, 2868389000042 is an apocalyptic number.

868389000042 is an abundant number, since it is smaller than the sum of its proper divisors (923752303638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

868389000042 is a wasteful number, since it uses less digits than its factorization.

868389000042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108919.

The product of its (nonzero) digits is 663552, while the sum is 48.

The spelling of 868389000042 in words is "eight hundred sixty-eight billion, three hundred eighty-nine million, forty-two", and thus it is an aban number.

Divisors: 1 2 3 6 53 106 139 159 181 278 318 362 417 543 834 1086 7367 9593 14734 19186 22101 25159 28779 44202 50318 57558 75477 108541 150954 217082 325623 651246 1333427 2666854 4000281 5752673 8000562 11505346 15087199 17258019 19645921 30174398 34516038 39291842 45261597 58937763 90523194 117875526 799621547 1041233813 1599243094 2082467626 2398864641 2730783019 3123701439 4797729282 5461566038 6247402878 8192349057 16384698114 144731500007 289463000014 434194500021 868389000042