442326213 has 48 divisors (see below), whose sum is σ = 813870720. Its totient is φ = 225358848.

The previous prime is 442326211. The next prime is 442326221. The reversal of 442326213 is 312623244.

442326213 is a `hidden beast` number, since 4 + 4 + 2 + 32 + 621 + 3 = 666.

It is not a de Polignac number, because 442326213 - 2¹ = 442326211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442326211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9481 + ... + 31217.

It is an arithmetic number, because the mean of its divisors is an integer number (16955640).

Almost surely, 2^442326213 is an apocalyptic number.

It is an amenable number.

442326213 is a deficient number, since it is larger than the sum of its proper divisors (371544507).

442326213 is a wasteful number, since it uses less digits than its factorization.

442326213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21786 (or 21783 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 442326213 is about 21031.5527957400. The cubic root of 442326213 is about 761.9285123172.

Adding to 442326213 its reverse (312623244), we get a palindrome (754949457).

The spelling of 442326213 in words is "four hundred forty-two million, three hundred twenty-six thousand, two hundred thirteen".