442040140 has 24 divisors (see below), whose sum is σ = 945801360. Its totient is φ = 173479488.

The previous prime is 442040117. The next prime is 442040141. The reversal of 442040140 is 41040244.

It is not an unprimeable number, because it can be changed into a prime (442040141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207450 + ... + 209569.

It is an arithmetic number, because the mean of its divisors is an integer number (39408390).

Almost surely, 2^442040140 is an apocalyptic number.

It is an amenable number.

442040140 is an abundant number, since it is smaller than the sum of its proper divisors (503761220).

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

442040140 is a wasteful number, since it uses less digits than its factorization.

442040140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417081 (or 417079 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 442040140 is about 21024.7506525048. The cubic root of 442040140 is about 761.7642186537.

Adding to 442040140 its reverse (41040244), we get a palindrome (483080384).

The spelling of 442040140 in words is "four hundred forty-two million, forty thousand, one hundred forty".