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80115042 = 2371907501
BaseRepresentation
bin1001100011001…
…11010101100010
312120202021011210
410301213111202
5131002140132
611541050550
71661652360
oct461472542
9176667153
1080115042
114124a687
12229b6a56
13137a0867
14a8d6630
157077bcc
hex4c67562

80115042 has 16 divisors (see below), whose sum is σ = 183120192. Its totient is φ = 22890000.

The previous prime is 80115031. The next prime is 80115043. The reversal of 80115042 is 24051108.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (80115043) 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, 953709 + ... + 953792.

It is an arithmetic number, because the mean of its divisors is an integer number (11445012).

Almost surely, 280115042 is an apocalyptic number.

80115042 is an abundant number, since it is smaller than the sum of its proper divisors (103005150).

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

80115042 is a wasteful number, since it uses less digits than its factorization.

80115042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907513.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 80115042 is about 8950.7006429664. The cubic root of 80115042 is about 431.0933811442.

The spelling of 80115042 in words is "eighty million, one hundred fifteen thousand, forty-two".

Divisors: 1 2 3 6 7 14 21 42 1907501 3815002 5722503 11445006 13352507 26705014 40057521 80115042