442140270 has 128 divisors (see below), whose sum is σ = 1301142528. Its totient is φ = 94617600.

The previous prime is 442140173. The next prime is 442140311. The reversal of 442140270 is 72041244.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 442140270.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 96430 + ... + 100910.

It is an arithmetic number, because the mean of its divisors is an integer number (10165176).

Almost surely, 2^442140270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442140270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (650571264).

442140270 is an abundant number, since it is smaller than the sum of its proper divisors (859002258).

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

442140270 is a wasteful number, since it uses less digits than its factorization.

442140270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4538.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 442140270 is about 21027.1317587540. The cubic root of 442140270 is about 761.8217320526.

The spelling of 442140270 in words is "four hundred forty-two million, one hundred forty thousand, two hundred seventy".