42519 has 4 divisors (see below), whose sum is σ = 56696. Its totient is φ = 28344.

The previous prime is 42509. The next prime is 42533. The reversal of 42519 is 91524.

42519 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42519 - 2⁵ = 42487 is a prime.

It is a super-2 number, since 2×42519² = 3615730722, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4³ + 2¹⁵ + 5⁵ + 1 + 9⁴ .

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42495 and 42504.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 42519.

It is not an unprimeable number, because it can be changed into a prime (42509) 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, 7084 + ... + 7089.

It is an arithmetic number, because the mean of its divisors is an integer number (14174).

2⁴²⁵¹⁹ is an apocalyptic number.

42519 is a deficient number, since it is larger than the sum of its proper divisors (14177).

42519 is a wasteful number, since it uses less digits than its factorization.

42519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14176.

The product of its digits is 360, while the sum is 21.

The square root of 42519 is about 206.2013579005. The cubic root of 42519 is about 34.9028598954.

It can be divided in two parts, 425 and 19, that added together give a palindrome (444).

The spelling of 42519 in words is "forty-two thousand, five hundred nineteen".