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42487 is a prime number
BaseRepresentation
bin1010010111110111
32011021121
422113313
52324422
6524411
7234604
oct122767
964247
1042487
1129a15
1220707
1316453
14116ab
15c8c7
hexa5f7

42487 has 2 divisors, whose sum is σ = 42488. Its totient is φ = 42486.

The previous prime is 42473. The next prime is 42491. The reversal of 42487 is 78424.

Subtracting 42487 from its reverse (78424), we obtain a cube (35937 = 333).

It can be divided in two parts, 42 and 487, that added together give a square (529 = 232).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42487 - 27 = 42359 is a prime.

It is a pancake number, because a pancake can be divided into 42487 parts by 291 straight cuts.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21243 + 21244.

It is an arithmetic number, because the mean of its divisors is an integer number (21244).

242487 is an apocalyptic number.

42487 is a deficient number, since it is larger than the sum of its proper divisors (1).

42487 is an equidigital number, since it uses as much as digits as its factorization.

42487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1792, while the sum is 25.

The square root of 42487 is about 206.1237492382. The cubic root of 42487 is about 34.8941016789.

The spelling of 42487 in words is "forty-two thousand, four hundred eighty-seven".