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42011080 = 2351761781
BaseRepresentation
bin1010000001000…
…0100111001000
32221001101100221
42200100213020
541223323310
64100235424
71020042166
oct240204710
987041327
1042011080
1121794601
121209bb74
13891c037
145818236
153a4cada
hex28109c8

42011080 has 32 divisors (see below), whose sum is σ = 100086840. Its totient is φ = 15815680.

The previous prime is 42011017. The next prime is 42011083. The reversal of 42011080 is 8011024.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 26440164 + 15570916 = 5142^2 + 3946^2 .

It is not an unprimeable number, because it can be changed into a prime (42011083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30211 + ... + 31570.

Almost surely, 242011080 is an apocalyptic number.

42011080 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42011080 is an abundant number, since it is smaller than the sum of its proper divisors (58075760).

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

42011080 is a wasteful number, since it uses less digits than its factorization.

42011080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61809 (or 61805 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 42011080 is about 6481.5954825953. The cubic root of 42011080 is about 347.6332287656.

The spelling of 42011080 in words is "forty-two million, eleven thousand, eighty".

Divisors: 1 2 4 5 8 10 17 20 34 40 68 85 136 170 340 680 61781 123562 247124 308905 494248 617810 1050277 1235620 2100554 2471240 4201108 5251385 8402216 10502770 21005540 42011080