442106140 has 48 divisors (see below), whose sum is σ = 1073866752. Its totient is φ = 149749056.

The previous prime is 442106123. The next prime is 442106141. The reversal of 442106140 is 41601244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442106141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7404 + ... + 30643.

It is an arithmetic number, because the mean of its divisors is an integer number (22372224).

Almost surely, 2^442106140 is an apocalyptic number.

It is an amenable number.

442106140 is an abundant number, since it is smaller than the sum of its proper divisors (631760612).

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

442106140 is a wasteful number, since it uses less digits than its factorization.

442106140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38146 (or 38144 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 442106140 is about 21026.3201725837. The cubic root of 442106140 is about 761.8021291901.

Adding to 442106140 its reverse (41601244), we get a palindrome (483707384).

The spelling of 442106140 in words is "four hundred forty-two million, one hundred six thousand, one hundred forty".