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8042757 = 319141101
BaseRepresentation
bin11110101011100100000101
3120010121120220
4132223210011
54024332012
6444214553
7125235162
oct36534405
916117526
108042757
1145a3708
12283a459
131887a38
1410d5069
15a8d08c
hex7ab905

8042757 has 8 divisors (see below), whose sum is σ = 11288160. Its totient is φ = 5079600.

The previous prime is 8042737. The next prime is 8042761. The reversal of 8042757 is 7572408.

8042757 is digitally balanced in base 3, 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 8042757 - 26 = 8042693 is a prime.

It is a super-2 number, since 2×80427572 = 129371880322098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8042707) 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, 70494 + ... + 70607.

It is an arithmetic number, because the mean of its divisors is an integer number (1411020).

Almost surely, 28042757 is an apocalyptic number.

It is an amenable number.

8042757 is a deficient number, since it is larger than the sum of its proper divisors (3245403).

8042757 is a wasteful number, since it uses less digits than its factorization.

8042757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141123.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 8042757 is about 2835.9754935471. The cubic root of 8042757 is about 200.3556754333.

The spelling of 8042757 in words is "eight million, forty-two thousand, seven hundred fifty-seven".

Divisors: 1 3 19 57 141101 423303 2680919 8042757