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3142279 = 7479551
BaseRepresentation
bin1011111111001010000111
312220122101201
423333022013
51301023104
6151203331
735465110
oct13771207
95818351
103142279
111856928
121076547
1386034a
145bb207
154210a4
hex2ff287

3142279 has 8 divisors (see below), whose sum is σ = 3667968. Its totient is φ = 2635800.

The previous prime is 3142273. The next prime is 3142301. The reversal of 3142279 is 9722413.

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 3142279 - 215 = 3109511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3142273) 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, 4447 + ... + 5104.

It is an arithmetic number, because the mean of its divisors is an integer number (458496).

Almost surely, 23142279 is an apocalyptic number.

3142279 is a deficient number, since it is larger than the sum of its proper divisors (525689).

3142279 is an equidigital number, since it uses as much as digits as its factorization.

3142279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9605.

The product of its digits is 3024, while the sum is 28.

The square root of 3142279 is about 1772.6474550795. The cubic root of 3142279 is about 146.4698536672.

The spelling of 3142279 in words is "three million, one hundred forty-two thousand, two hundred seventy-nine".

Divisors: 1 7 47 329 9551 66857 448897 3142279