442422066 has 16 divisors (see below), whose sum is σ = 923315904. Its totient is φ = 141062064.

The previous prime is 442422037. The next prime is 442422073. The reversal of 442422066 is 660224244.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1602841 + ... + 1603116.

It is an arithmetic number, because the mean of its divisors is an integer number (57707244).

Almost surely, 2^442422066 is an apocalyptic number.

442422066 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

442422066 is an abundant number, since it is smaller than the sum of its proper divisors (480893838).

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

442422066 is a wasteful number, since it uses less digits than its factorization.

442422066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3205985.

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 442422066 is about 21033.8314626698. The cubic root of 442422066 is about 761.9835455007.

The spelling of 442422066 in words is "four hundred forty-two million, four hundred twenty-two thousand, sixty-six".