442447195140 has 36 divisors (see below), whose sum is σ = 1342089825804. Its totient is φ = 117985918656.

The previous prime is 442447195129. The next prime is 442447195147. The reversal of 442447195140 is 41591744244.

442447195140 is a `hidden beast` number, since 4 + 4 + 2 + 447 + 195 + 14 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 53580212676 + 388866982464 = 231474^2 + 623592^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (442447195147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1229019807 + ... + 1229020166.

It is an arithmetic number, because the mean of its divisors is an integer number (37280272939).

Almost surely, 2^442447195140 is an apocalyptic number.

It is an amenable number.

442447195140 is an abundant number, since it is smaller than the sum of its proper divisors (899642630664).

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

442447195140 is a wasteful number, since it uses less digits than its factorization.

442447195140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458039988 (or 2458039983 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 442447195140 in words is "four hundred forty-two billion, four hundred forty-seven million, one hundred ninety-five thousand, one hundred forty".