442322261 has 8 divisors (see below), whose sum is σ = 472161600. Its totient is φ = 413138880.

The previous prime is 442322213. The next prime is 442322263. The reversal of 442322261 is 162223244.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442322261 - 2¹⁸ = 442060117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442322261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442322263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162596 + ... + 165293.

It is an arithmetic number, because the mean of its divisors is an integer number (59020200).

Almost surely, 2^442322261 is an apocalyptic number.

It is an amenable number.

442322261 is a deficient number, since it is larger than the sum of its proper divisors (29839339).

442322261 is a wasteful number, since it uses less digits than its factorization.

442322261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327979.

The product of its digits is 4608, while the sum is 26.

The square root of 442322261 is about 21031.4588414594. The cubic root of 442322261 is about 761.9262431395.

The spelling of 442322261 in words is "four hundred forty-two million, three hundred twenty-two thousand, two hundred sixty-one".