442821070 has 32 divisors (see below), whose sum is σ = 842296320. Its totient is φ = 167275680.

The previous prime is 442821061. The next prime is 442821073. The reversal of 442821070 is 70128244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442821073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5985 + ... + 30355.

It is an arithmetic number, because the mean of its divisors is an integer number (26321760).

Almost surely, 2^442821070 is an apocalyptic number.

442821070 is a deficient number, since it is larger than the sum of its proper divisors (399475250).

442821070 is a wasteful number, since it uses less digits than its factorization.

442821070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24480.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 442821070 is about 21043.3141401254. The cubic root of 442821070 is about 762.2125448752.

The spelling of 442821070 in words is "four hundred forty-two million, eight hundred twenty-one thousand, seventy".