442420 has 24 divisors (see below), whose sum is σ = 1014048. Its totient is φ = 160800.

The previous prime is 442399. The next prime is 442439. The reversal of 442420 is 24244.

It is a junction number, because it is equal to n+sod(n) for n = 442394 and 442403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 786 + ... + 1225.

It is an arithmetic number, because the mean of its divisors is an integer number (42252).

2⁴⁴²⁴²⁰ is an apocalyptic number.

It is an amenable number.

442420 is an abundant number, since it is smaller than the sum of its proper divisors (571628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442420 is a wasteful number, since it uses less digits than its factorization.

442420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031 (or 2029 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 442420 is about 665.1466003822. The cubic root of 442420 is about 76.1982359408.

Adding to 442420 its reverse (24244), we get a palindrome (466664).

It can be divided in two parts, 4424 and 20, that added together give a palindrome (4444).

The spelling of 442420 in words is "four hundred forty-two thousand, four hundred twenty", and thus it is an iban number.