442874140 has 24 divisors (see below), whose sum is σ = 984744432. Its totient is φ = 166728960.

The previous prime is 442874129. The next prime is 442874143. The reversal of 442874140 is 41478244.

It is a super-2 number, since 2×442874140² = 392275007761479200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 442874096 and 442874105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442874143) 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, 650946 + ... + 651625.

It is an arithmetic number, because the mean of its divisors is an integer number (41031018).

Almost surely, 2^442874140 is an apocalyptic number.

It is an amenable number.

442874140 is an abundant number, since it is smaller than the sum of its proper divisors (541870292).

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

442874140 is a wasteful number, since it uses less digits than its factorization.

442874140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302597 (or 1302595 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 34.

The square root of 442874140 is about 21044.5750729256. The cubic root of 442874140 is about 762.2429928422.

The spelling of 442874140 in words is "four hundred forty-two million, eight hundred seventy-four thousand, one hundred forty".