442530144252 has 72 divisors (see below), whose sum is σ = 1353621630816. Its totient is φ = 118999701504.

The previous prime is 442530144241. The next prime is 442530144281. The reversal of 442530144252 is 252441035244.

442530144252 is a `hidden beast` number, since 44 + 25 + 301 + 44 + 252 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51644893 + ... + 51653460.

It is an arithmetic number, because the mean of its divisors is an integer number (18800300428).

Almost surely, 2^442530144252 is an apocalyptic number.

442530144252 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

442530144252 is an abundant number, since it is smaller than the sum of its proper divisors (911091486564).

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

442530144252 is a wasteful number, since it uses less digits than its factorization.

442530144252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103298387 (or 103298382 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 442530144252 its reverse (252441035244), we get a palindrome (694971179496).

The spelling of 442530144252 in words is "four hundred forty-two billion, five hundred thirty million, one hundred forty-four thousand, two hundred fifty-two".