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42240486 = 237040081
BaseRepresentation
bin1010000100100…
…0100111100110
32221111001001110
42201020213212
541303143421
64105205450
71022016051
oct241104746
987431043
1042240486
11219309a2
1212190886
13899c592
145877a98
153a95a76
hex28489e6

42240486 has 8 divisors (see below), whose sum is σ = 84480984. Its totient is φ = 14080160.

The previous prime is 42240481. The next prime is 42240503. The reversal of 42240486 is 68404224.

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

42240486 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42240481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3520035 + ... + 3520046.

It is an arithmetic number, because the mean of its divisors is an integer number (10560123).

Almost surely, 242240486 is an apocalyptic number.

42240486 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42240486 is a wasteful number, since it uses less digits than its factorization.

42240486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7040086.

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 42240486 is about 6499.2681126416. The cubic root of 42240486 is about 348.2648433115.

The spelling of 42240486 in words is "forty-two million, two hundred forty thousand, four hundred eighty-six".

Divisors: 1 2 3 6 7040081 14080162 21120243 42240486