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118381129 = 206357383
BaseRepresentation
bin1110000111001…
…01101001001001
322020202101101021
413003211221021
5220301144004
615425152441
72635136326
oct703455111
9266671337
10118381129
1160906549
123378b721
131b6ab109
1411a17b4d
15a5d5d54
hex70e5a49

118381129 has 4 divisors (see below), whose sum is σ = 118440576. Its totient is φ = 118321684.

The previous prime is 118381121. The next prime is 118381147. The reversal of 118381129 is 921183811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 118381129 - 23 = 118381121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118381094 and 118381103.

It is not an unprimeable number, because it can be changed into a prime (118381121) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 26629 + ... + 30754.

It is an arithmetic number, because the mean of its divisors is an integer number (29610144).

Almost surely, 2118381129 is an apocalyptic number.

It is an amenable number.

118381129 is a deficient number, since it is larger than the sum of its proper divisors (59447).

118381129 is an equidigital number, since it uses as much as digits as its factorization.

118381129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59446.

The product of its digits is 3456, while the sum is 34.

The square root of 118381129 is about 10880.3092327378. The cubic root of 118381129 is about 491.0143211865.

The spelling of 118381129 in words is "one hundred eighteen million, three hundred eighty-one thousand, one hundred twenty-nine".

Divisors: 1 2063 57383 118381129