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42427 = 7111929
BaseRepresentation
bin1010010110111011
32011012101
422112323
52324202
6524231
7234460
oct122673
964171
1042427
1129970
1220677
1316408
1411667
15c887
hexa5bb

42427 has 16 divisors (see below), whose sum is σ = 57600. Its totient is φ = 30240.

The previous prime is 42409. The next prime is 42433. The reversal of 42427 is 72424.

It is not a de Polignac number, because 42427 - 27 = 42299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a plaindrome in base 14.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (42407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1449 + ... + 1477.

It is an arithmetic number, because the mean of its divisors is an integer number (3600).

242427 is an apocalyptic number.

42427 is a deficient number, since it is larger than the sum of its proper divisors (15173).

42427 is a wasteful number, since it uses less digits than its factorization.

42427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66.

The product of its digits is 448, while the sum is 19.

The square root of 42427 is about 205.9781541815. The cubic root of 42427 is about 34.8776681626.

Adding to 42427 its product of digits (448), we get a cube (42875 = 353).

The spelling of 42427 in words is "forty-two thousand, four hundred twenty-seven", and thus it is an iban number.

Divisors: 1 7 11 19 29 77 133 203 209 319 551 1463 2233 3857 6061 42427