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42870783 = 3197310303
BaseRepresentation
bin1010001110001…
…0011111111111
32222200001122210
42203202133333
541433331113
64130511503
71030252464
oct243423777
988601583
1042870783
11222214aa
1212435593
138b60437
14599d66b
153b6c6c3
hex28e27ff

42870783 has 16 divisors (see below), whose sum is σ = 60999680. Its totient is φ = 26702784.

The previous prime is 42870743. The next prime is 42870803. The reversal of 42870783 is 38707824.

It is not a de Polignac number, because 42870783 - 213 = 42862591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42870743) 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 15 ways as a sum of consecutive naturals, for example, 991 + ... + 9312.

It is an arithmetic number, because the mean of its divisors is an integer number (3812480).

Almost surely, 242870783 is an apocalyptic number.

42870783 is a deficient number, since it is larger than the sum of its proper divisors (18128897).

42870783 is a wasteful number, since it uses less digits than its factorization.

42870783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10398.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 42870783 is about 6547.5784073198. The cubic root of 42870783 is about 349.9885247938.

The spelling of 42870783 in words is "forty-two million, eight hundred seventy thousand, seven hundred eighty-three".

Divisors: 1 3 19 57 73 219 1387 4161 10303 30909 195757 587271 752119 2256357 14290261 42870783