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7142927 = 113120947
BaseRepresentation
bin11011001111111000001111
3111102220020212
4123033320033
53312033202
6413033035
7114466601
oct33177017
914386225
107142927
114039650
12248577b
1316312ac
14d3d171
15961652
hex6cfe0f

7142927 has 8 divisors (see below), whose sum is σ = 8044032. Its totient is φ = 6283800.

The previous prime is 7142923. The next prime is 7142929. The reversal of 7142927 is 7292417.

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 7142927 - 22 = 7142923 is a prime.

It is a super-2 number, since 2×71429272 = 102042812254658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7142893 and 7142902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7142923) 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, 10133 + ... + 10814.

It is an arithmetic number, because the mean of its divisors is an integer number (1005504).

Almost surely, 27142927 is an apocalyptic number.

7142927 is a deficient number, since it is larger than the sum of its proper divisors (901105).

7142927 is a wasteful number, since it uses less digits than its factorization.

7142927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20989.

The product of its digits is 7056, while the sum is 32.

The square root of 7142927 is about 2672.6254881670. The cubic root of 7142927 is about 192.5863063827.

The spelling of 7142927 in words is "seven million, one hundred forty-two thousand, nine hundred twenty-seven".

Divisors: 1 11 31 341 20947 230417 649357 7142927