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115043147 = 137839731
BaseRepresentation
bin1101101101101…
…10101101001011
322000110210112022
412312312231023
5213422340042
615225435055
72564564522
oct666665513
9260423468
10115043147
1159a3668a
123263ba8b
131aaac98b
14113c94b9
15a176cd2
hex6db6b4b

115043147 has 4 divisors (see below), whose sum is σ = 115883016. Its totient is φ = 114203280.

The previous prime is 115043129. The next prime is 115043161. The reversal of 115043147 is 741340511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 741340511 = 4317240477.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-115043147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115049147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419729 + ... + 420002.

It is an arithmetic number, because the mean of its divisors is an integer number (28970754).

Almost surely, 2115043147 is an apocalyptic number.

115043147 is a deficient number, since it is larger than the sum of its proper divisors (839869).

115043147 is an equidigital number, since it uses as much as digits as its factorization.

115043147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839868.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 115043147 is about 10725.8168453503. The cubic root of 115043147 is about 486.3552233166.

Adding to 115043147 its reverse (741340511), we get a palindrome (856383658).

The spelling of 115043147 in words is "one hundred fifteen million, forty-three thousand, one hundred forty-seven".

Divisors: 1 137 839731 115043147