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43130143 = 725411627
BaseRepresentation
bin1010010010000…
…1110100011111
310000011020102201
42210201310133
542020131033
64140232331
71032412600
oct244416437
9100136381
1043130143
1122389351
121253b6a7
138c214c4
145a29da7
153bbe47d
hex2921d1f

43130143 has 12 divisors (see below), whose sum is σ = 50295432. Its totient is φ = 36877680.

The previous prime is 43130141. The next prime is 43130149. The reversal of 43130143 is 34103134.

43130143 = T97 + T98 + ... + T637.

43130143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43130143 - 21 = 43130141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43130143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43130141) 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 11 ways as a sum of consecutive naturals, for example, 25696 + ... + 27322.

It is an arithmetic number, because the mean of its divisors is an integer number (4191286).

Almost surely, 243130143 is an apocalyptic number.

43130143 is a deficient number, since it is larger than the sum of its proper divisors (7165289).

43130143 is a wasteful number, since it uses less digits than its factorization.

43130143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182 (or 2175 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 43130143 is about 6567.3543379355. The cubic root of 43130143 is about 350.6928940410.

Adding to 43130143 its reverse (34103134), we get a palindrome (77233277).

The spelling of 43130143 in words is "forty-three million, one hundred thirty thousand, one hundred forty-three".

Divisors: 1 7 49 541 1627 3787 11389 26509 79723 880207 6161449 43130143