442242556 has 96 divisors (see below), whose sum is σ = 997194240. Its totient is φ = 167049216.

The previous prime is 442242529. The next prime is 442242557. The reversal of 442242556 is 655242244.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442242557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 967480 + ... + 967936.

It is an arithmetic number, because the mean of its divisors is an integer number (10387440).

Almost surely, 2^442242556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442242556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (498597120).

442242556 is an abundant number, since it is smaller than the sum of its proper divisors (554951684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442242556 is a wasteful number, since it uses less digits than its factorization.

442242556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 609 counting only the distinct ones).

The product of its digits is 76800, while the sum is 34.

The square root of 442242556 is about 21029.5638566281. The cubic root of 442242556 is about 761.8804748654.

The spelling of 442242556 in words is "four hundred forty-two million, two hundred forty-two thousand, five hundred fifty-six".