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42471 = 3311213
BaseRepresentation
bin1010010111100111
32011021000
422113213
52324341
6524343
7234552
oct122747
964230
1042471
1129a00
12206b3
1316440
1411699
15c8b6
hexa5e7

42471 has 24 divisors (see below), whose sum is σ = 74480. Its totient is φ = 23760.

The previous prime is 42467. The next prime is 42473. The reversal of 42471 is 17424.

It is a happy number.

It is not a de Polignac number, because 42471 - 22 = 42467 is a prime.

It is a super-3 number, since 3×424713 = 229825765359333, which contains 333 as substring.

It is a Duffinian number.

42471 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3261 + ... + 3273.

242471 is an apocalyptic number.

42471 is a deficient number, since it is larger than the sum of its proper divisors (32009).

42471 is a wasteful number, since it uses less digits than its factorization.

42471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44 (or 27 counting only the distinct ones).

The product of its digits is 224, while the sum is 18.

The square root of 42471 is about 206.0849339471. The cubic root of 42471 is about 34.8897209214.

Adding to 42471 its reverse (17424), we get a palindrome (59895).

The spelling of 42471 in words is "forty-two thousand, four hundred seventy-one", and thus it is an iban number.

Divisors: 1 3 9 11 13 27 33 39 99 117 121 143 297 351 363 429 1089 1287 1573 3267 3861 4719 14157 42471