442519 has 12 divisors (see below), whose sum is σ = 562248. Its totient is φ = 344400.

The previous prime is 442517. The next prime is 442531. The reversal of 442519 is 915244.

It is not a de Polignac number, because 442519 - 2¹ = 442517 is a prime.

It is a super-2 number, since 2×442519² = 391646130722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442493 and 442502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129 + ... + 949.

It is an arithmetic number, because the mean of its divisors is an integer number (46854).

2⁴⁴²⁵¹⁹ is an apocalyptic number.

442519 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

442519 is a deficient number, since it is larger than the sum of its proper divisors (119729).

442519 is a wasteful number, since it uses less digits than its factorization.

442519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846 (or 839 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 442519 is about 665.2210159037. The cubic root of 442519 is about 76.2039191248.

It can be divided in two parts, 4425 and 19, that added together give a palindrome (4444).

The spelling of 442519 in words is "four hundred forty-two thousand, five hundred nineteen".