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129141804 = 22311978347
BaseRepresentation
bin1111011001010…
…00110000101100
3100000000002020210
413230220300230
5231030014204
620451542420
73125454501
oct754506054
9300002223
10129141804
1166996170
12372baa10
13209a7c8c
14132194a8
15b50e389
hex7b28c2c

129141804 has 24 divisors (see below), whose sum is σ = 328724928. Its totient is φ = 39133840.

The previous prime is 129141773. The next prime is 129141811. The reversal of 129141804 is 408141921.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489042 + ... + 489305.

It is an arithmetic number, because the mean of its divisors is an integer number (13696872).

Almost surely, 2129141804 is an apocalyptic number.

It is an amenable number.

129141804 is an abundant number, since it is smaller than the sum of its proper divisors (199583124).

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

129141804 is a wasteful number, since it uses less digits than its factorization.

129141804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978365 (or 978363 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 129141804 is about 11364.0575500127. The cubic root of 129141804 is about 505.4625099750.

The spelling of 129141804 in words is "one hundred twenty-nine million, one hundred forty-one thousand, eight hundred four".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 132 978347 1956694 2935041 3913388 5870082 10761817 11740164 21523634 32285451 43047268 64570902 129141804