442212103 has 2 divisors, whose sum is σ = 442212104. Its totient is φ = 442212102.

The previous prime is 442212083. The next prime is 442212149. The reversal of 442212103 is 301212244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442212103 - 2²⁵ = 408657671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442212193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221106051 + 221106052.

It is an arithmetic number, because the mean of its divisors is an integer number (221106052).

Almost surely, 2^442212103 is an apocalyptic number.

442212103 is a deficient number, since it is larger than the sum of its proper divisors (1).

442212103 is an equidigital number, since it uses as much as digits as its factorization.

442212103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 442212103 is about 21028.8397920570. The cubic root of 442212103 is about 761.8629866655.

Adding to 442212103 its reverse (301212244), we get a palindrome (743424347).

The spelling of 442212103 in words is "four hundred forty-two million, two hundred twelve thousand, one hundred three".