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487742143 = 782184869
BaseRepresentation
bin11101000100100…
…101101010111111
31020222202212102211
4131010211222333
51444330222033
6120222001251
715041511520
oct3504455277
91228685384
10487742143
11230354989
12117416227
137a082925
1448ac4847
152cc462cd
hex1d125abf

487742143 has 8 divisors (see below), whose sum is σ = 558105120. Its totient is φ = 417550560.

The previous prime is 487742137. The next prime is 487742219. The reversal of 487742143 is 341247784.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 487742143 - 225 = 454187711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 487742096 and 487742105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487742543) 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 7 ways as a sum of consecutive naturals, for example, 36688 + ... + 48181.

It is an arithmetic number, because the mean of its divisors is an integer number (69763140).

Almost surely, 2487742143 is an apocalyptic number.

487742143 is a deficient number, since it is larger than the sum of its proper divisors (70362977).

487742143 is an equidigital number, since it uses as much as digits as its factorization.

487742143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85697.

The product of its digits is 150528, while the sum is 40.

The square root of 487742143 is about 22084.8849442328. The cubic root of 487742143 is about 787.1607436983.

The spelling of 487742143 in words is "four hundred eighty-seven million, seven hundred forty-two thousand, one hundred forty-three".

Divisors: 1 7 821 5747 84869 594083 69677449 487742143