442651340 has 12 divisors (see below), whose sum is σ = 929567856. Its totient is φ = 177060528.

The previous prime is 442651277. The next prime is 442651351. The reversal of 442651340 is 43156244.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11066264 + ... + 11066303.

It is an arithmetic number, because the mean of its divisors is an integer number (77463988).

Almost surely, 2^442651340 is an apocalyptic number.

It is an amenable number.

442651340 is an abundant number, since it is smaller than the sum of its proper divisors (486916516).

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

442651340 is a wasteful number, since it uses less digits than its factorization.

442651340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22132576 (or 22132574 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 442651340 is about 21039.2808812469. The cubic root of 442651340 is about 762.1151489770.

The spelling of 442651340 in words is "four hundred forty-two million, six hundred fifty-one thousand, three hundred forty".