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42975087 = 314325029
BaseRepresentation
bin1010001111101…
…1111101101111
32222212100201220
42203323331233
542000200322
64133034423
71031165541
oct243737557
988770656
1042975087
1122292901
1212485a13
138b98a5c
1459c9691
153b8d55c
hex28fbf6f

42975087 has 4 divisors (see below), whose sum is σ = 57300120. Its totient is φ = 28650056.

The previous prime is 42975077. The next prime is 42975089. The reversal of 42975087 is 78057924.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-42975087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42975089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7162512 + ... + 7162517.

It is an arithmetic number, because the mean of its divisors is an integer number (14325030).

Almost surely, 242975087 is an apocalyptic number.

42975087 is a deficient number, since it is larger than the sum of its proper divisors (14325033).

42975087 is a wasteful number, since it uses less digits than its factorization.

42975087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14325032.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 42975087 is about 6555.5386506373. The cubic root of 42975087 is about 350.2721339323.

The spelling of 42975087 in words is "forty-two million, nine hundred seventy-five thousand, eighty-seven".

Divisors: 1 3 14325029 42975087