42459 has 4 divisors (see below), whose sum is σ = 56616.
Its totient is φ = 28304.
The previous prime is 42457. The next prime is 42461. The reversal of 42459 is 95424.
It is a semiprime because it is the product of two primes.
It is an interprime number because it is at equal distance from previous prime (42457) and next prime (42461).
It is a cyclic number.
It is not a de Polignac number, because 42459 - 21 = 42457 is a prime.
It is a D-number.
It is a plaindrome in base 11 and base 14.
It is not an unprimeable number, because it can be changed into a prime (42451) 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, 7074 + ... + 7079.
It is an arithmetic number, because the mean of its divisors is an integer number (14154).
242459 is an apocalyptic number.
42459 is a deficient number, since it is larger than the sum of its proper divisors (14157).
42459 is a wasteful number, since it uses less digits than its factorization.
42459 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 14156.
The product of its digits is 1440, while the sum is 24.
The square root of 42459 is about 206.0558176805.
The cubic root of 42459 is about 34.8864346313.
The spelling of 42459 in words is "forty-two thousand, four hundred fifty-nine".