442102066 has 8 divisors (see below), whose sum is σ = 757889280. Its totient is φ = 189472308.

The previous prime is 442102061. The next prime is 442102103. The reversal of 442102066 is 660201244.

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

It is a super-2 number, since 2×442102066² = 390908473522936712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 442102066.

It is not an unprimeable number, because it can be changed into a prime (442102061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15789346 + ... + 15789373.

It is an arithmetic number, because the mean of its divisors is an integer number (94736160).

Almost surely, 2^442102066 is an apocalyptic number.

442102066 is a deficient number, since it is larger than the sum of its proper divisors (315787214).

442102066 is a wasteful number, since it uses less digits than its factorization.

442102066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31578728.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 442102066 is about 21026.2232937825. The cubic root of 442102066 is about 761.7997891853.

The spelling of 442102066 in words is "four hundred forty-two million, one hundred two thousand, sixty-six".