442422243 has 10 divisors (see below), whose sum is σ = 660902484. Its totient is φ = 294948108.

The previous prime is 442422241. The next prime is 442422247. The reversal of 442422243 is 342224244.

It is not a de Polignac number, because 442422243 - 2¹ = 442422241 is a prime.

It is a super-2 number, since 2×442422243² = 391474882202302098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (442422241) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2730921 + ... + 2731082.

Almost surely, 2^442422243 is an apocalyptic number.

442422243 is a deficient number, since it is larger than the sum of its proper divisors (218480241).

442422243 is an equidigital number, since it uses as much as digits as its factorization.

442422243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5462015 (or 5462006 counting only the distinct ones).

The product of its digits is 12288, while the sum is 27.

The square root of 442422243 is about 21033.8356701768. The cubic root of 442422243 is about 761.9836471164.

Adding to 442422243 its reverse (342224244), we get a palindrome (784646487).

The spelling of 442422243 in words is "four hundred forty-two million, four hundred twenty-two thousand, two hundred forty-three".