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140471 = 178263
BaseRepresentation
bin100010010010110111
321010200122
4202102313
513443341
63002155
71123352
oct422267
9233618
10140471
11965a1
126935b
134bc26
1439299
152b94b
hex224b7

140471 has 4 divisors (see below), whose sum is σ = 148752. Its totient is φ = 132192.

The previous prime is 140453. The next prime is 140473. The reversal of 140471 is 174041.

140471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 140471 - 26 = 140407 is a prime.

It is a super-3 number, since 3×1404713 = 8315364233121333, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 8263 = 140471 / (1 + 4 + 0 + 4 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4115 + ... + 4148.

It is an arithmetic number, because the mean of its divisors is an integer number (37188).

2140471 is an apocalyptic number.

140471 is a deficient number, since it is larger than the sum of its proper divisors (8281).

140471 is an equidigital number, since it uses as much as digits as its factorization.

140471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8280.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 140471 is about 374.7946104202. The cubic root of 140471 is about 51.9831059518.

The spelling of 140471 in words is "one hundred forty thousand, four hundred seventy-one", and thus it is an iban number.

Divisors: 1 17 8263 140471