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42080290 = 257601147
BaseRepresentation
bin1010000010000…
…1100000100010
32221011220022021
42200201200202
541233032130
64101532054
71020451030
oct240414042
987156267
1042080290
11218315aa
121211402a
1389446a5
145835550
153a6337a
hex2821822

42080290 has 16 divisors (see below), whose sum is σ = 86565312. Its totient is φ = 14427504.

The previous prime is 42080281. The next prime is 42080303. The reversal of 42080290 is 9208024.

42080290 is nontrivially palindromic in base 8.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300504 + ... + 300643.

It is an arithmetic number, because the mean of its divisors is an integer number (5410332).

Almost surely, 242080290 is an apocalyptic number.

42080290 is an abundant number, since it is smaller than the sum of its proper divisors (44485022).

42080290 is a wasteful number, since it uses less digits than its factorization.

42080290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601161.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 42080290 is about 6486.9322487598. The cubic root of 42080290 is about 347.8240236359.

It can be divided in two parts, 4 and 2080290, that multiplied together give a triangular number (8321160 = T4079).

The spelling of 42080290 in words is "forty-two million, eighty thousand, two hundred ninety".

Divisors: 1 2 5 7 10 14 35 70 601147 1202294 3005735 4208029 6011470 8416058 21040145 42080290