442373 has 4 divisors (see below), whose sum is σ = 445740. Its totient is φ = 439008.

The previous prime is 442367. The next prime is 442397. The reversal of 442373 is 373244.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 195364 + 247009 = 442^2 + 497^2 .

It is a cyclic number.

It is not a de Polignac number, because 442373 - 2¹⁰ = 441349 is a prime.

It is a super-2 number, since 2×442373² = 391387742258, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4⁵ + 4⁹ + 3 + 2¹¹ + 7 + 3¹¹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442333) 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, 1478 + ... + 1751.

It is an arithmetic number, because the mean of its divisors is an integer number (111435).

2⁴⁴²³⁷³ is an apocalyptic number.

It is an amenable number.

442373 is a deficient number, since it is larger than the sum of its proper divisors (3367).

442373 is a wasteful number, since it uses less digits than its factorization.

442373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366.

The product of its digits is 2016, while the sum is 23.

The square root of 442373 is about 665.1112688866. Note that the first 3 decimals coincide. The cubic root of 442373 is about 76.1955375668.

The spelling of 442373 in words is "four hundred forty-two thousand, three hundred seventy-three", and thus it is an iban number.