442642466 has 16 divisors (see below), whose sum is σ = 762633600. Its totient is φ = 188749440.

The previous prime is 442642439. The next prime is 442642469. The reversal of 442642466 is 664246244.

It is a super-2 number, since 2×442642466² = 391864705413122312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (442642469) 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, 76655 + ... + 82226.

It is an arithmetic number, because the mean of its divisors is an integer number (47664600).

Almost surely, 2^442642466 is an apocalyptic number.

442642466 is a deficient number, since it is larger than the sum of its proper divisors (319991134).

442642466 is a wasteful number, since it uses less digits than its factorization.

442642466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159089.

The product of its digits is 221184, while the sum is 38.

The square root of 442642466 is about 21039.0699889515. The cubic root of 442642466 is about 762.1100561387.

The spelling of 442642466 in words is "four hundred forty-two million, six hundred forty-two thousand, four hundred sixty-six".