442426 has 8 divisors (see below), whose sum is σ = 668340. Its totient is φ = 219648.

The previous prime is 442399. The next prime is 442439. The reversal of 442426 is 624244.

It can be written as a sum of positive squares in 2 ways, for example, as 361201 + 81225 = 601^2 + 285^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 442397 and 442406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391 + ... + 1018.

2⁴⁴²⁴²⁶ is an apocalyptic number.

442426 is a deficient number, since it is larger than the sum of its proper divisors (225914).

442426 is a wasteful number, since it uses less digits than its factorization.

442426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568.

The product of its digits is 1536, while the sum is 22.

The square root of 442426 is about 665.1511106508. The cubic root of 442426 is about 76.1985804003.

It can be divided in two parts, 442 and 426, that added together give a palindrome (868).

The spelling of 442426 in words is "four hundred forty-two thousand, four hundred twenty-six".