442202243 has 4 divisors (see below), whose sum is σ = 505374000. Its totient is φ = 379030488.

The previous prime is 442202231. The next prime is 442202251. The reversal of 442202243 is 342202244.

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

It is a cyclic number.

It is not a de Polignac number, because 442202243 - 2¹² = 442198147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442202843) 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, 31585868 + ... + 31585881.

It is an arithmetic number, because the mean of its divisors is an integer number (126343500).

Almost surely, 2^442202243 is an apocalyptic number.

442202243 is a deficient number, since it is larger than the sum of its proper divisors (63171757).

442202243 is an equidigital number, since it uses as much as digits as its factorization.

442202243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63171756.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 442202243 is about 21028.6053508073. The cubic root of 442202243 is about 761.8573242057.

Adding to 442202243 its reverse (342202244), we get a palindrome (784404487).

Subtracting from 442202243 its reverse (342202244), we obtain a palindrome (99999999).

The spelling of 442202243 in words is "four hundred forty-two million, two hundred two thousand, two hundred forty-three".