442653 has 4 divisors (see below), whose sum is σ = 590208. Its totient is φ = 295100.

The previous prime is 442633. The next prime is 442691. The reversal of 442653 is 356244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442653 - 2⁸ = 442397 is a prime.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442633) 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, 73773 + ... + 73778.

It is an arithmetic number, because the mean of its divisors is an integer number (147552).

2⁴⁴²⁶⁵³ is an apocalyptic number.

It is an amenable number.

442653 is a deficient number, since it is larger than the sum of its proper divisors (147555).

442653 is a wasteful number, since it uses less digits than its factorization.

442653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147554.

The product of its digits is 2880, while the sum is 24.

The square root of 442653 is about 665.3217266857. The cubic root of 442653 is about 76.2116101653.

Adding to 442653 its reverse (356244), we get a palindrome (798897).

The spelling of 442653 in words is "four hundred forty-two thousand, six hundred fifty-three".