442404212 has 6 divisors (see below), whose sum is σ = 774207378. Its totient is φ = 221202104.

The previous prime is 442404199. The next prime is 442404223. The reversal of 442404212 is 212404244.

It can be written as a sum of positive squares in only one way, i.e., 361152016 + 81252196 = 19004^2 + 9014^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55300523 + ... + 55300530.

It is an arithmetic number, because the mean of its divisors is an integer number (129034563).

Almost surely, 2^442404212 is an apocalyptic number.

It is an amenable number.

442404212 is a deficient number, since it is larger than the sum of its proper divisors (331803166).

442404212 is a wasteful number, since it uses less digits than its factorization.

442404212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110601057 (or 110601055 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 442404212 is about 21033.4070468862. The cubic root of 442404212 is about 761.9732953811.

Adding to 442404212 its reverse (212404244), we get a palindrome (654808456).

The spelling of 442404212 in words is "four hundred forty-two million, four hundred four thousand, two hundred twelve".