442131321340 has 48 divisors (see below), whose sum is σ = 935999517600. Its totient is φ = 175425184512.

The previous prime is 442131321329. The next prime is 442131321361. The reversal of 442131321340 is 43123131244.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 442131321299 and 442131321308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1052587 + ... + 1411453.

It is an arithmetic number, because the mean of its divisors is an integer number (19499989950).

Almost surely, 2^442131321340 is an apocalyptic number.

It is an amenable number.

442131321340 is an abundant number, since it is smaller than the sum of its proper divisors (493868196260).

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

442131321340 is a wasteful number, since it uses less digits than its factorization.

442131321340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359374 (or 359372 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 442131321340 its reverse (43123131244), we get a palindrome (485254452584).

The spelling of 442131321340 in words is "four hundred forty-two billion, one hundred thirty-one million, three hundred twenty-one thousand, three hundred forty".