442634247 has 16 divisors (see below), whose sum is σ = 715368960. Its totient is φ = 268263000.

The previous prime is 442634207. The next prime is 442634267. The reversal of 442634247 is 742436244.

It is not a de Polignac number, because 442634247 - 2¹¹ = 442632199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442634207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 744879 + ... + 745472.

It is an arithmetic number, because the mean of its divisors is an integer number (44710560).

Almost surely, 2^442634247 is an apocalyptic number.

442634247 is a deficient number, since it is larger than the sum of its proper divisors (272734713).

442634247 is a wasteful number, since it uses less digits than its factorization.

442634247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490371 (or 1490365 counting only the distinct ones).

The product of its digits is 129024, while the sum is 36.

The square root of 442634247 is about 21038.8746609699. The cubic root of 442634247 is about 762.1053391479.

The spelling of 442634247 in words is "four hundred forty-two million, six hundred thirty-four thousand, two hundred forty-seven".