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401271 = 31310289
BaseRepresentation
bin1100001111101110111
3202101102220
41201331313
5100320041
612333423
73260613
oct1417567
9671386
10401271
11254532
12174273
13110850
14a6343
157dd66
hex61f77

401271 has 8 divisors (see below), whose sum is σ = 576240. Its totient is φ = 246912.

The previous prime is 401243. The next prime is 401279. The reversal of 401271 is 172104.

Adding to 401271 its reverse (172104), we get a palindrome (573375).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 401271 - 29 = 400759 is a prime.

It is a super-2 number, since 2×4012712 = 322036830882, which contains 22 as substring.

It is an Ulam number.

401271 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 401271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401279) 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, 5106 + ... + 5183.

It is an arithmetic number, because the mean of its divisors is an integer number (72030).

2401271 is an apocalyptic number.

401271 is a deficient number, since it is larger than the sum of its proper divisors (174969).

401271 is a wasteful number, since it uses less digits than its factorization.

401271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10305.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 401271 is about 633.4595488269. The cubic root of 401271 is about 73.7585875282.

The spelling of 401271 in words is "four hundred one thousand, two hundred seventy-one", and thus it is an iban number.

Divisors: 1 3 13 39 10289 30867 133757 401271