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42300309 = 371198593
BaseRepresentation
bin1010000101011…
…1001110010101
32221121002010010
42201113032111
541312102214
64110350433
71022355342
oct241271625
987532103
1042300309
1121971937
12121bb419
1389c088c
1458917c9
153aa8659
hex2857395

42300309 has 8 divisors (see below), whose sum is σ = 57195072. Its totient is φ = 27802880.

The previous prime is 42300263. The next prime is 42300311. The reversal of 42300309 is 90300324.

42300309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 42300309 - 29 = 42299797 is a prime.

It is a super-2 number, since 2×423003092 = 3578632282990962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42300359) 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 7 ways as a sum of consecutive naturals, for example, 99084 + ... + 99509.

It is an arithmetic number, because the mean of its divisors is an integer number (7149384).

Almost surely, 242300309 is an apocalyptic number.

It is an amenable number.

42300309 is a deficient number, since it is larger than the sum of its proper divisors (14894763).

42300309 is a wasteful number, since it uses less digits than its factorization.

42300309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198667.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 42300309 is about 6503.8687717389. The cubic root of 42300309 is about 348.4291755430.

The spelling of 42300309 in words is "forty-two million, three hundred thousand, three hundred nine".

Divisors: 1 3 71 213 198593 595779 14100103 42300309