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43130045 = 572176041
BaseRepresentation
bin1010010010000…
…1110010111101
310000011020022002
42210201302331
542020130140
64140232045
71032412400
oct244416275
9100136262
1043130045
1122389272
121253b625
138c2144a
145a29d37
153bbe415
hex2921cbd

43130045 has 12 divisors (see below), whose sum is σ = 60206364. Its totient is φ = 29574720.

The previous prime is 43130041. The next prime is 43130051. The reversal of 43130045 is 54003134.

43130045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 16370116 + 26759929 = 4046^2 + 5173^2 .

It is not a de Polignac number, because 43130045 - 22 = 43130041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43129999 and 43130026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43130041) 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, 87776 + ... + 88265.

It is an arithmetic number, because the mean of its divisors is an integer number (5017197).

Almost surely, 243130045 is an apocalyptic number.

It is an amenable number.

43130045 is a deficient number, since it is larger than the sum of its proper divisors (17076319).

43130045 is a wasteful number, since it uses less digits than its factorization.

43130045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176060 (or 176053 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 43130045 is about 6567.3468767837. The cubic root of 43130045 is about 350.6926284269.

Adding to 43130045 its reverse (54003134), we get a palindrome (97133179).

The spelling of 43130045 in words is "forty-three million, one hundred thirty thousand, forty-five".

Divisors: 1 5 7 35 49 245 176041 880205 1232287 6161435 8626009 43130045