442306207 has 6 divisors (see below), whose sum is σ = 505556408. Its totient is φ = 379071912.

The previous prime is 442306141. The next prime is 442306211. The reversal of 442306207 is 702603244.

It is not a de Polignac number, because 442306207 - 2¹⁵ = 442273439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442306297) 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 in 5 ways as a sum of consecutive naturals, for example, 51669 + ... + 59617.

Almost surely, 2^442306207 is an apocalyptic number.

442306207 is a deficient number, since it is larger than the sum of its proper divisors (63250201).

442306207 is an frugal number, since it uses more digits than its factorization.

442306207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15905 (or 7956 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 442306207 is about 21031.0771716524. The cubic root of 442306207 is about 761.9170250399.

Multiplying 442306207 by its sum of digits (28), we get a square (12384573796 = 111286²).

The spelling of 442306207 in words is "four hundred forty-two million, three hundred six thousand, two hundred seven".