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42104015 = 515115573
BaseRepresentation
bin1010000010011…
…1010011001111
32221020002211222
42200213103033
541234312030
64102233555
71020610142
oct240472317
987202758
1042104015
1121848408
12121258bb
138952425
145840059
153a6a3e5
hex28274cf

42104015 has 8 divisors (see below), whose sum is σ = 50567328. Its totient is φ = 33654880.

The previous prime is 42104011. The next prime is 42104017. The reversal of 42104015 is 51040124.

42104015 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 not a de Polignac number, because 42104015 - 22 = 42104011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42103984 and 42104002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42104011) 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, 4769 + ... + 10341.

It is an arithmetic number, because the mean of its divisors is an integer number (6320916).

Almost surely, 242104015 is an apocalyptic number.

42104015 is a deficient number, since it is larger than the sum of its proper divisors (8463313).

42104015 is a wasteful number, since it uses less digits than its factorization.

42104015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7089.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 42104015 is about 6488.7606674927. The cubic root of 42104015 is about 347.8893794480.

Adding to 42104015 its reverse (51040124), we get a palindrome (93144139).

The spelling of 42104015 in words is "forty-two million, one hundred four thousand, fifteen".

Divisors: 1 5 1511 5573 7555 27865 8420803 42104015