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42001205 = 535923399
BaseRepresentation
bin1010000000111…
…0001100110101
32221000212211012
42200032030311
541223014310
64100122005
71020001331
oct240161465
987025735
1042001205
1121788144
1212096305
1389176ac
1458147c1
153a49c05
hex280e335

42001205 has 8 divisors (see below), whose sum is σ = 50544000. Its totient is φ = 33505936.

The previous prime is 42001199. The next prime is 42001217. The reversal of 42001205 is 50210024.

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 42001205 - 24 = 42001189 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42001205.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9905 + ... + 13494.

It is an arithmetic number, because the mean of its divisors is an integer number (6318000).

Almost surely, 242001205 is an apocalyptic number.

It is an amenable number.

42001205 is a deficient number, since it is larger than the sum of its proper divisors (8542795).

42001205 is a wasteful number, since it uses less digits than its factorization.

42001205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23763.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 42001205 is about 6480.8336655094. The cubic root of 42001205 is about 347.6059887522.

Adding to 42001205 its reverse (50210024), we get a palindrome (92211229).

The spelling of 42001205 in words is "forty-two million, one thousand, two hundred five".

Divisors: 1 5 359 1795 23399 116995 8400241 42001205