442402 has 4 divisors (see below), whose sum is σ = 663606. Its totient is φ = 221200.

The previous prime is 442399. The next prime is 442439. The reversal of 442402 is 204244.

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

It can be written as a sum of positive squares in only one way, i.e., 346921 + 95481 = 589^2 + 309^2 .

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110599 + ... + 110602.

2⁴⁴²⁴⁰² is an apocalyptic number.

442402 is a deficient number, since it is larger than the sum of its proper divisors (221204).

442402 is a wasteful number, since it uses less digits than its factorization.

442402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221203.

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

The square root of 442402 is about 665.1330693929. The cubic root of 442402 is about 76.1972025436.

Adding to 442402 its reverse (204244), we get a palindrome (646646).

The spelling of 442402 in words is "four hundred forty-two thousand, four hundred two", and thus it is an iban number.